Corky is nearly swamped when he tries to help Tyler's brother Donny, who also has Down's, mainstream at Marshall High. Meanwhile, Tyler's difficulty adjusting to a repeat of his senior year causes friction between him and Becca.

Becca is about to have her Sweet 16, which might go sour when she wants to take her relationship with Tyler to the next level, to Drew's dismay. Meanwhile, Corky opens his own checking account.