Bunsen becomes excited about celebrating his first Christmas; when Amanda finds out she's on the naughty list, she stuffs Santa in a gift box and hijacks all the toys.
Bunsen is excited to take Mikey to Dimmsdale to meet Cosmo on Friend-iversary, but trouble arises when Amanda secretly follows them and teams up with Mr. Crocker.
Mikey explains that Bunsen will be richer than Amanda after the tooth fairy leaves him money for all the teeth he loses during teeth losing season, so Amanda vows to catch the tooth fairy.
Bunsen attends his first day of human middle school in hopes of proving that beasts and humans can happily co-exist, but trouble ensures when he drinks beet juice.