Reeling from the news that Parsifal III has a last-minute charter with the hardest preference sheet of the season, the crew try to enjoy their night off. A wild night leads to massive hangovers the next day as Chef Marcos struggles to create a savory but safe menu for the guests based on a complex list of dietary restrictions, plus a three-tiered gluten free wedding cake. Ashley sets her sights on proving to Daisy that she’s ready to be promoted. Scarlett tries to determine if Gary has long-term potential after the charter ends. Pulling off a wedding is the crews biggest challenge yet as they pull out all the stops to end the season strong.

Tired of his crew making simple mistakes, Captain Glenn keeps an unwavering eye on them. A Women’s Empowerment Dinner takes a strange turn when the women involved can’t stop tearing each other down. Sydney and Colin bring the mood back up when they perform an original song for the guests. An evening sail catches Natasha off guard, and she never quite catches back up. Dani and JL get serious about where their relationship is heading but questions still linger. Gary takes a swing and whiffs on an attempt to get Alli back and then doubles down on more bad decisions.

Daisy confronts Gary about his behavior; Natasha and Daisy still can't agree on the amount of pitas served; Glenn answers uncomfortable questions about the biggest crash in "Below Deck" history; Andy asks Dani the question everyone wants to know.

The cat fight continues as the guests gut each other over lunch. Later that night, Daisy pulls together a mermaid-themed dinner while Jean-Luc dons glittery leggings and serves himself up as dessert. Alli makes a difficult decision that leaves Gary reeling. Sydney is tasked with writing a song about women’s empowerment, and Colin offers to orchestrate. Things get awkward when the primary overhears Alli complaining about her mom and informs Glenn of the indiscretion. At a perilous beach picnic, the rosé runs dry, and as the Parsifal crew begins to crack, Glenn’s frustration boils over.

Capt. Glenn is proud of the crew for knocking out a pride charter, but has to deliver bad news; after Gary learns about Mads' three-way kiss, he starts flirting more with Daisy, leading Colin to voice his concerns; Colin throws a gossip grenade.

Daisy is brought to her breaking point as the demanding guests continue to challenge the Parsifal III crew with their incessant requests. The arrival of a new stew puts smiles on everyone’s faces except for Ashley’s as she’s quick to claim Gary as her territory. When sparks fly between Gary and new stew Scarlett, Ashley shifts her focus to work, determined to finally get the coveted second second stew position.

Gary jumps to the rescue as an empty neighboring boat drags into another boat nearby; Marcos shines again as he caters to the demanding guests with ease, but his crew worries that he's burning himself out.

Capt. Glenn notices the crew is slipping on service when a guest is injured and interior doesn't hear the walkie call; after Alex and Mads confess their feelings from the start, Mads is torn between Alex and Gary.

As the guests return from the wedding ceremony, the crew tries to cap off a great season with the perfect reception dinner. While Marcos strives to wow the guests with his best meal yet, time is running out and he still has to add the finishing touches on the wedding cake. Daisy puts Ashley in charge of the final dinner service to see if she’s finally ready for a promotion. Gary and Scarlett try to savor what little time they have left. Once the guests depart, the crew tries to enjoy one last night together as Gary looks for the perfect stew to end his season with.

Tom continues to spiral over his mistakes while juggling devastating news from back home. Capt. Glenn contemplates whether he can trust Tom. The Parsifal III crew pull together a “talentless” talent show for the energetic charter guests. In the galley, Gabriela and Marcos have a miscommunication during dinner service that causes tension to bubble up between them. Friction between Gary and Daisy intensifies after Kelsie is caught covering Gabriela’s duties on the final day of charter.

The deck team springs into action when a surge of wind pushes Parsifal towards the dock; Dani has a panic attack while under sail; Colin receives heartbreaking news from home; Alli feels the pressure to address Sydney’s dirty laundry.

The hungover crew of the Parsifal tries to piece together what they did the night before; Dani does some sleuthing while Gary and Sydney downplay their hookup; Daisy's frustration with the deck team ratchets up.

After ending another charter on a high note, the crew are raring to go for a night on the town. Ashley swears she’ll stay out of Gary’s and Scarlett’s boatmance while Scarlett continues to walk a fine line between balancing her feelings for Gary and keeping her interior team happy. As charter number eight approaches, Glenn informs the crew they will be stuck at anchor for the next several days due to bad weather, leaving the crew to feel the pressure to bring their A game. Marcos feels it the most as he’s tasked with a molecular gastronomy meal while just receiving bad news from home.

Back on board Parsifal III in Sardinia, Italy, Capt. Glenn is poised for his smoothest sail yet -- until he isn't; Daisy comes back ready to prove she knows what she's doing as a chief stew; chief engineer Colin is determined to avoid a boat romance.

Chef Marcos attempts to power through another stellar dinner while dealing with some devastating news. The weather conditions intensify forcing the deck crew to attempt to avoid another running-aground scenario. To keep themselves entertained at anchor, the guests challenge the crew to a relay race to determine who’s the most worthy of their inaugural Seaman’s Cup Trophy. With the charter coming to a close, the crew hope their hands-on approach with the guests give them a tip to remember.

After getting vulnerable with Daisy about how low she’s been feeling aboard Parsifal III, Gabriela wants to try to turn things around on the upcoming crew day off. Coming off another successful charter and in true celebratory fashion, Ashley goes full steam ahead in her pursuit for Gary. The next morning, however, a hungover Gary claims he can’t remember what happened. The crew head to a luxury villa to unwind, reset and figure out what really happened between Gary and Ashley. Everyone is riding high until Marcos and Gabriela bump heads yet again, instantly turning a day in paradise into one of drama and torture.

Natasha is frustrated with Daisy's constructive criticism; Gary and Colin play blackjack croupiers for the guests; Sydney gets frustrated as Gary puts the hot pursuit on Alli.

Captain Glenn is back on board Parsifal III, sailing the Balearic Island of Menorca with some familiar faces -- Daisy, Gary, and Colin; new to the team, Chef Marcos knows he has to make this season memorable for the guests.

On the season finale, an uncomfortable drug search on Parsifal III casts a dark cloud over the final charter and sends the crew into panic mode. The crew scrambles to pull together a sailing regatta, but still wonder if they’ll get a tip. Tensions in the interior department finally boil over, as a heated confrontation erupts. Georgia has feelings she needs to get off her chest, even if it means possibly altering some relationships forever. Captain Glenn takes the crew out one final time to celebrate Ciara’s birthday and reminisce about the season. The crew says some final and emotional good-byes.

Daisy confronts Chef Cloyce about his underwhelming meals; Keith draws a line in the sand with Danni; Gary grows frustrated with Emma; a family comes aboard to celebrate a sweet sixteen; a late-night emergency.

The crew is excited to enjoy a much-need day off together, but things get touchy when the couples’ PDA goes on full display. Amidst the lovers vs non-lovers quarrel, Sydney drops bombs that re-ignite Daisy and Gary’s interior vs exterior feud. While at the dock, high winds blow Parsifal straight into the dock. Glenn and the deck team scramble to bring the boat to safety, and Gary comes to the rescue in a big way. Just as the crew thinks they have things under control they smash into the dock a second time!

The first charter gets rocky when the guests get in a drunken personal fight; the next morning, the guests' excitement to sail puts Daisy and Natasha at odds over serving breakfast on heel; Jean-Luc realizes he may have lost two guests at sea.

Adam and Jenna can’t see eye-to-eye on where their relationship stands, and their epic fight on the flybridges is a buzzkill for the rest of the crew. Ciara tries to manage Parker, but he resents her bossiness. When the two come to blows, Captain Glenn takes notice, and calls the deck team for a meeting. Despite feeling overwhelmed with work, Madison finds time to fall harder for Parker. In the wake of their first fight, Adam and Jenna find themselves on shaky ground. Parker botches a beach stakeout, and Madison and Ciara blunder the picnic setup and suffer Jenna’s wrath.

Captain Glenn and Jenna have a tough meeting with Madison. The crew bonds on their day off and Georgia, Ciara, and Paget get a little too close as a proposition is made. Parker reconnects with his ex, Kaiti, and invites her to visit Corfu. After a blissful day together, Adam and Jenna’s “shmexual shmension” finally comes to fruition. But the afterglow doesn’t last long as Adam’s jealousy erupts after Jenna and Georgia discover they have something in common.

After Adam has a jealous outburst, Jenna asks Georgia to be her buffer. Madison keeps her head down and works hard to earn back Jenna’s trust. The Playboy guests get creative with seashells during a photo shoot on the beach. Tensions remain high between Paget and Ciara. And Parker has difficulty with a beach picnic setup that sends him into an epic downward spiral. Captain Glenn intervenes, but it may be too late.

Chef Cloyce walks a tightrope through the guests' numerous dietary restrictions; Daisy tries to balance past and present as she considers her attraction to both Gary and Keith; after an eventful final night out, the crew says their final goodbyes.

Gary asks Daisy a loaded question; Diana reevaluates her feelings; a group of friends come aboard looking for an unforgettable experience.

Gary tries to correct course after kissing Danni, but not before Daisy finds out and gives him an earful. A group of dentists board the boat looking to brighten their smiles with a top-notch vacation. On deck, Gary tries to motivate Emma in new ways. Chef Cloyce struggles during an important dinner celebration, and the guests grow wary with a long wait. Frustrated with Danni flirting at work, Diana lets Keith in on a forbidden secret.

Feeling a lack of support, Daisy remains at odds with Gary and Natasha; Daisy jumps through hoops to plan an extravagant proposal for Barrie and Scott; flirtations between Dani and Jean-Luc continue to build; plates fly during a lunch service.

Captain Glenn is shocked to see what the crew did to the boat during their night off; he doesn't let the crew off the hook for the damage they caused.

The cast members of "Below Deck Sailing Yacht" Season 4 come together to talk about the events of the season.

Danni and Diana compete for the new deckhand's affection; Gary and Daisy adjust to roommate life; a primary charter guest celebrating her 50th birthday has high expectations.

Capt. Glenn threatens to kick one of the throuple charter guests off during a drunken guest fight; Mads receives a wake-up call that prompts her to dismiss Gary's apology attempt.

Capt. Glenn reprimands the crew as recent slip-ups are directly affecting communication and morale; Daisy breaks down when she's proven wrong about the walkies not working; chef Ileisha is determined to prove she can complete a 10-course dinner.

The crew works to avert a major nautical crisis; tensions between Danni and Keith remain high; Gary attempts to drown his sorrows and despite Daisy trying to comfort him, he ends up making a mess and nearly taking out an eye.

Another engine issue emerges, forcing Capt. Glenn to keep the returning guests entertained; Daisy and Colin make up after their fight as their relationship grows stronger; Daisy confronts Gary about Mads and claims he's playing his usual games.

After a tense night out, a bucket of chicken really turns things around; Dr. Tiffany Moon and husband Daniel come aboard with their friends, hoping for a five-star experience; Keith and Danni struggle to get in sync.

After a wild, wine-fueled, night out, Jenna wades through a sea of regrets and braces for the awkward interactions that follow. A group of high-maintenance, vegan guests board Parsifal, and Adam struggles to live up to their meatless and milkless expectations. Georgia gets attitude from Chef Adam and seeks solace in her budding friendship with Madison and burgeoning flirtation with Paget. And Paget worries about how to be both Ciara’s boss and her boyfriend as tensions between them escalate making them question if the charter season will get the best of them.

Captain Glenn confronts Jenna about her relationship with Adam. A doctor visits and delivers bad news that could end one crew member’s career. With drama swirling in all departments, Captain Glenn is further shocked to learn that someone may have brought illegal drugs onto the boat. A tough decision and an impending drug search threaten to bring the charter season screeching to an early end.

In an effort to turn the charter around, Capt. Glenn takes the guests on a sail; Lucy makes a mistake to a charter guest's garment; chef Ileisha continues to leave the guests waiting too long between courses; Capt. Glenn gives her honest feedback.

After the guests complain about service, Daisy is confronted by two crew members and becomes emotional; Chef Cloyce plans to make a move on Daisy.

Capt. Glenn lays down the law with the crew after not following his rules. The tension between Gary and Chase boils over during a heated confrontation.

Georgia, Paget and Ciara finally clear the air about their flirtation; Ciara opens up about Georgia's betrayal; Parker reflects on his lack of experience; Jenna and Adam discuss the ups and downs of their romance; Madison and Jenna go head to head.

Natasha finds it nearly impossible to keep the galley afloat; Gary can't get any one-on-one time with Alli with Sydney hovering nearby; a beach picnic turns into a fiasco; the deck team puts on a drag show that has the guests raving.

Gary and Chase continue to butt heads, but the deck team bands together to pull off a spectacular drag show for the guests; a night out causes a major rift.

Gary crashes the tender and worries about how much damage he's caused; Danni and Keith continue to flirt on the boat; chef Cloyce surprises everyone with an unexpected rap; Gary and Daisy's friendship is still rocky despite trying to clear the air.