Maci and Chey organize a family reunion with the cast of "TMOG" and "Teen Mom Two" in San Diego; when a surprise guest is revealed, drama surfaces between the newer castmates and a screaming match breaks out between Jade and Ashley.

As everyone decompresses from the night before, the group sets out for its first activity together, and some unexpected bonds form; the moms have their first session with life coach Cheyenne Bryant; Amber's self-doubt.

The cast begins to let loose and form new friendships while a new dad joins the group; Leah decides to invite someone special to the reunion while Amber opens up about her strained relationship with her daughter.

A challenging obstacle course lands a cast member in the hospital; coach Bryant forces the OGs to revisit their tumultuous past; a controversial cast member arrives as the group enjoys a backyard barbecue.

The cast deals with the aftershock of seeing Farrah again as she threatens to derail the entire reunion; the boys head out on a boat for some dad time, leaving the girls to relax and spend time with coach Bryant.

Maci and Farrah have a tense sit down; the group does a team building ropes course, and Ashley freezes; the group gets disco fever when Briana throws a party; Chey opens up about feeling like an outsider when she first joined.