Sabrina comes down with a case of "finger flu" which causes her magic to malfunction - and accidentally transfers itself to Mrs. Quick who, angered by Mr. Kraft's scheme to replace the cafeteria lady with indentured students, turns him into a chimpanzee. Meanwhile, Sabrina tries to help Valerie gain self-confidence, but turns her into a monster of efficiency and selfishness, while Salem fakes illness to get attention and gets more than he bargained for.