The kids want to find out who started a rumor that a boy knocked over Mikey's popcorn at the movies and Mikey then threw the boy into the girl's bathroom.

Fed up with Vince's ego, the kids bet Vince that he can't go one whole day without beating someone in a sport.

T.J. takes charge when Gretchen seems to achieve a dream that T.J.'s always had, to be an astronaut on the space shuttle.

Spinelli gets too attached to the lucky marble that Vince loans her.

Gus starts an obsessive crusade to kill all the germs in the world, while Mikey will do anything to save them.

After Mikey helps Cornchip Girl off the climbing frame after she gets stuck, the gang wonder how big he will be. Gretchen and Galileo conduct a test to find out how big everyone will be when they are older, and Mikey's test says he will be 50 feet tall! The others find this cool and wonder what 50 foot Mikey could do, but Mikey isn't so sure that being 50 feet tall will be that great.