S01E01 All the Popular Kids
A popular new cheerleader invites everyone at school to her big party, except for the MBC kids. Cathy snags an invitation but is trapped with everyone else when the cheerleader turns into an alien intent...
Several students, including Sam, are suddenly slavishly devoted to Gilbert, one of the nerdiest kids in school. Gilbert turns out to be an alien using student labor to process his vast comic book collection. Meanwhile, Cathy discovers comics for the first time, and can't stop acting (and speaking) like her favorite superhero.
This action-comedy follows the adventures of four 10 year-olds protecting their town against alien invasion. Juggling school and top-secret monster busting can be tough, especially when your science teacher turns out to be an alien! Monster Buster Club, or 'MBC' as it is known, follows the exploits of Cathy and her friends on their mission to protect Singletown from troublesome aliens.