While Karen oversees an effort to jettison non-essential passenger items, Billie tries to teach an inattentive Ryan how to dock the ship. Matt learns of Judd’s plan to make the “ultimate sacrifice” by returning to Earth. Meanwhile, the passengers suspect all is not as it seems with the journey.

A search party commences for Matt, who’s in hiding with a guilty conscience – and the airlock codes. Iris questions Karen about her rumored affair with Ryan. Rav seeks an apology from Judd for ruining her life, as chaos ensues when a seat on a rescue shuttle suddenly becomes available. Season finale.

When the ship crosses paths with a rogue space station, Ryan and the crew jump at the opportunity to socialize, while Billie angles for help with Avenue 5’s mounting eel problem. Then, after Rav discovers the true purpose of Storm Falcon’s mission, Ryan must steer his team through a difficult moral quandary.

With the ship divided, both sides find themselves in an all-out fight to survive. Then, Ryan takes part in a shotgun wedding, and Rav reaches a personal breakthrough.

After a failed revolt, the passengers put the ship’s leadership to a vote, bringing forth a pack of unlikely candidates. Meanwhile, back on Earth, the Office of the Other President proposes a plan that could spell doom for Avenue 5.

When a malfunction occurs aboard the luxury space cruise ship Avenue 5, it's up to engineer Billie McEvoy to warn Capt. Ryan Clark, owner Herman Judd and his right-hand woman Iris Kimura that the incident may have a cataclysmic knock-on effect.

Rav and her team meet with a NASA representative to plot a potential rescue mission. An engineer working in a hidden part of the ship has a surprisingly optimistic theory about the ship's future. Karen becomes a vocal advocate for passengers.

Billie seeks her moment in the limelight after stepping in to help Ryan during the ship's newest crisis. Iris vets comedian Jordan Hatwal's material for the Halfway Home Party, which Judd has decided should go on as planned. Doug tries to get in the way of Mia's newfound sexual freedom.

With the ship facing a fiery threat, Billie hatches a plan that could just save some of the passengers… and the eels. Meanwhile, Iris makes a risky bid on Earth, Ryan finds himself in the middle of a three-way couples’ quarrel, and Mia shares some shocking news with Doug.

After five long months, the passengers of Avenue 5 eagerly await their impending return to Earth­­ while behind the scenes, Ryan and the crew struggle to find a way to reveal the much longer timeline of their journey home. Later, a disgraced Karen comes to blows with a newly famous Frank.