Moose thinks Midge isn't treating him right so Archie offers to pose as a secret admirer to get Midge jealous. Midge gets jealous but thinks Archie is doing it so she'll break up with Moose to start dating Archie. Midge decides she will start dating Archie. When Moose catches Midge kissing Archie, Moose puts Archie in the hospital.; Katy knits K.O. a sweater as a surpise. When it ends up being too large for him he shrinks it,but then it ends up too small. K.O. then re-gifts the sweater to Katy as a trendy sweater dress. When Katy finds out what K.O. has done she gets mad and throws him out of her house.; Jughead doesn't want to flunk his business course so he enlists the help of Dilton. Together they build a machine, that for a quarter, will help students with their home work. Intrigued, Mr. Weatherbee takes a closer look and finds out that it's Dilton who is the brains inside the machine.; Miss Grundy bakes Mr. Weatherbee a birthday cake.; Laurie wants a picture of Wilbur for her locker. He gives her one but only after Linda puts her special touch on it.; Nobody is safe from the paddle-ball craze that takes over Riverdale High.; Pat and Susie play house.; Li'l Jinx gets spanked for not eating her vegetables.