Lena and Martin choose to share the house for the summer while the children are away at camp despite Lena's reservations, but soon realize it might not be the worst idea. They collectively agree to throw their annual backyard pina colada party where they will celebrate their independence from their children. Elsewhere, a friendly face returns back home and Martin can't help but see it as

While Lena gets ready to go out on a first date with a handsome man whose sexual chemistry is undeniable, Martin finishes his dance lessons with Charlotte and attempts to try to fix things with Lena on what would have been their 16th wedding anniversary. Meanwhile, Mason is being teased by his friends for not being as sexually active as they claim to be; and to prove that she would be a good mom, Maya attempts to watch over Lena and Martin's kids, with questionable results.

Martin grows suspicious of Lena's strange behavior when she begins sneaking out of the house to secretly help Lisa Apple with her baby. Lena tries to avoid Martin but feels she needs to tell him the truth about her arrangement with Lisa. Meanwhile, Martin takes Mae on a driving lesson, which turns into a hot pursuit.

Vlad announces that construction on the house is almost finished; Martin begins dating a divorcee who works in his building; Camille tries to be a good influence on Arthur's nephew.

After a doctor's visit, Arthur learns he's under stress due to the approach of Valentine's Day; Arthur asks Camille if they can take a break from the holiday; Lena decides she wants to cook a platonic Valentine's Day dinner for Martin.

With this being Martin's week in the house to take care of the kids, he discovers that daughter Mae finds his parenting skills to be lacking and a bit sexist. Meanwhile, Lena's time in the garage gives her time to contemplate going out with a handsome doctor and perhaps taking the relationship to the next level.

Lena goes out on another date with Wes, whom she's smitten with; but unbeknownst to her, Martin is doing his best to take care of a sick Milo. Meanwhile, Maya makes a decision on whether or not to become a single mother.

After Lena and Martin sleep together, Lena searches for signs that they are or aren't meant to be a couple; Arthur and Camille trail Lisa Apple, hoping to determine if she is pregnant with Martin's baby.

Camille urges Lena to become more active on social media to get her business off the ground; Martin takes over for Lena as Milo's room parent and investigates why Milo is feared by his classmates.

Lena tries to figure out if Mae is romantically involved with her new best friend; Martin worries about Mason's relationship with his new girlfriend.

Lena and Martin have opposing mind-sets over the new contractor's repair methods; Martin takes Mason camping to help him get over his breakup with Hazel and to teach him how to be a man, but learns from him that it is okay to express his emotions.

Lena decides to call Martin's bluff on selling the house but is surprised when he begins getting the house ready for sale; Lena tries to cheer up Mae by inviting her friend from camp to visit; the friend seemingly brings supernatural events with her.

Martin finds every way he can to avoid asking Lisa Apple if she is pregnant; Lena worries Mason is changing himself to please his new girlfriend; Maya tells Frank a made-up story about a friend who is dating someone new.

Lena tries to support Maya with her pregnancy, only to get accused of being too controlling; after Martin reads Mae's diary, he suspects that she is romantically involved with her teacher and panics.

Things get complicated after Lena and Vlad kiss; Martin goes to Paige's house for more privacy but feels uneasy; Mae finds out that Mason has a crush on a girl at school.

In an effort to connect with their kids and bring the family closer together, Lena and Martin plan a fun outing, only to be interrupted by a blackout. Elsewhere, Lena urges an overdue Maya to get induced but must succumb and honor her birthing plan. Meanwhile, Martin continues to try and figure out where his relationship with Lisa stands.