Jerry moves his new, young girlfriend, Kayee, into a house he shares with his ex-wife, Jessica; Lisa still isn't over her divorce from her ex, Jimmy, even though it was decades ago; Alex went from Caroline's gay best friend to her boyfriend.

April surprises her husband by getting a matching tattoo with her ex; Kayee's lack of contributions around the house frustrates Jerry's ex; Caroline is fed up when Alex's ex crashes Friendsgiving.

On a family ski trip with Kayee and Jessica, Jerry is forced to pick sides; Jennifer and her wife decide Jennifer's ex-husband should be the sperm donor for their baby; Alex tells his sister that he is taking the next step with Caroline.

A fight on Jimmy and Lisa's RV trip; ex-husband Josh questions his role in the baby's life as Jennifer and Chantel try for pregnancy; Alex's sexuality comes into question at a family dinner.

Kayee and Jerry escape to his cabin; Kayee plans a memorable evening; things intensify between Lisa and Jimmy during a game of truth or dare; Alex thought nothing could be crazier than Caroline meeting his family, until he meets Caroline's mom.

Facing the harsh reality of Jerry's bond with his ex-wife, Kayee gives him an ultimatum; April asks her husband's ex-wife to be her maid-of-honor; Caroline draws the line when Alex's ex-boyfriend, Stephen, interrupts a special Valentine's dinner.