Lexi’s conservative parents join the Fosters for dinner, and Stef’s traditional-minded dad drops by. Meanwhile, Callie attends a therapy group for foster kids; Wyatt throws a wild party at his childhood home; and Brandon has an important piano audition.
Sarah gets kidnapped, while Art has a run-in with Daniel that later results in his suspension. And, Cosima and Delphine set up a new lab at the Dyad institute to learn more about the former’s condition.
Sarah is brought to Rachel Duncan, a clone high in the Dyad organization, who offers Sarah and Kira protection. Leekie also offers the same to Alison and Cosima, as Cosima begins to display symptoms of a respiratory illness that Katja had.
Wynonna and her squad have a new case on their hands: a briefcase containing top secret stuff was stolen from a Black Badge field marshal, along with his severed hand, by otherworldly crooks Jaxon and Stephanie.
Passion takes Jesus and Lexi by surprise, and soon they realize there may be consequences. Meanwhile, Brandon objects to Callie’s budding romance with Wyatt; Stef and Lena’s friends hit a snag in their relationship; and school bullies target Jude.
Lena wants Mariana’s quinceañera to be perfect, but Mariana uncovers a secret that may ruin her day. Meanwhile, Lena’s mom visits; and Stef reminds Brandon of the dating rules when she observes his and Talya’s friction over Callie.