Fall has arrived as the group reunites at Jack, Kate and Danny's alma mater. An attempt to spice things up leads to friction between Danny and Claude.

Jack and Kate try to rekindle the romance of their college years, with mixed results. Nick comes face-to-face with Lila's anger about the divorce.

A twist of fate forces Anne and Ginny to confront their complicated feelings about one another. Jack and Kate's standoff comes to a head.

Months later, the friends reunite at a tropical resort, where a new addition complicates the group dynamic.

Hoping to warm up to Ginny, the gang hits a late-night beach party, where tequila-fueled conflict ensues. Anne is tempted by forbidden fruit.

It's Nick's turn to be on the outs as Anne joins the other couples for a New Year's ski vacation — and he struggles to fit in with Ginny's friends.

Nick and Anne welcome longtime friends Kate, Jack, Danny and Claude for a weekend at their bucolic lake house — where some very unwelcome news awaits.

Reeling from Nick's confession, the other couples must decide whether to reveal the truth to Anne before she suffers a public embarrassment.