Marcus is torn between his old crush and a new flirtation. Carol's new low leads her to an unlikely ally. Justin's latest mistake cuts deep.

Carol's recovery has a shaky start. Kat grows closer to Justin, while a fight with Jenn has bitter consequences. Marcus faces a hard decision.

Dasha's painful secrets come to light. Fixated on winning, Kat puts her mental health at risk. Serena's dad returns with a complicated proposal.

Kat's mental health crisis reaches a breaking point, triggering widespread damage. Mandy has an emergency, and Serena slips into loneliness.