Tess is surprised to feel jealous when she and Trevor go on a double date with Sam and an old friend. Deonte is struck by love at first sight, Marissa and Ronnie find common ground, Brian hides his troubles, and the Mystery Giver strikes again.

Tess feels conflicted about Sam and Trevor, and seeks Henry's advice. Summer avoids the past, while Deonte obsesses over his new crush. Ronnie and Marissa's friendship grows, the Mystery Giver brings even more cheer, and Trevor drops big news on Sam.

Trevor asks for Sam's help picking an engagement ring. Sam botches being honest with Tess. Ronnie admits he has feelings for Marissa, and Deonte fears his love is lost. Harry helps Summer reconcile with her sister. The Mystery Giver is identified.