Yick feels that Mr. Raditch gives him poor marks without even reading his work. Arthur suggests copying some of Stephanie's old assignments and submitting it as Yick's, too see if his marks improve. All is fine for the first little while, until Mr. Raditch discovers that Yick has been cheating. Melanie and Kathleen want to experiment with drugs and buy pills off of Joey, not knowing that they are actually vitamins. After overhearing what Joey has done, they both confront him and demand their money back.

Melanie fears she is too flat chested for the school swim team. After constant complaining that her mother wont buy her a bra, L.D. takes Melanie to the department store. When she arrives at school, wearing her bra, she is the victim of much ridicule and teasing. At the big swim meet (girls team vs. the boys team), Joey makes a loud comment about Melanie's chest to the whole school, and L.D. tosses him into the pool.

The substitute teacher from ""A Helping Hand"" (season 2, episode 2) is back, only this time is teaching Susie's class. Lucy warns Susie to be careful around him, but Susie doesn't know what she means by this. After the teacher touches Susie; her, Lucy, L.D. and Wheels report him to the principal.