S1·E17 Splendor in the Class
Aired February 10, 1991
Synopsis
When Parker falls head over heels for a girl, his buds find that their leader has fallen under her spell and they're powerless to stop her. He grows brainwashed enough that Mikey and Jerry can no longer depend on him, causing a ripple in the universe. Now they need to save their friend before the group permanently disbands.