When Margaret is disappointed that no one but Todd can attend her family Thanksgiving dinner, Todd tries to convince his brother to come home; Margaret's family inadvertently helps her crack a case involving an injured bank teller and robbery.
As they attempt to adjust to the Jump Street program, Officers Rocky and Garrett go undercover in a high school to flush out its biggest drug dealer.
Panic ensues after Archie and the gang learn that Mrs. Thornton is accused of being a communist; Cheryl's father forces her to out gay students at Riverdale High or risk losing power over the Vixens.