SpongeBob is finally given the chance to be a hall monitor at his boating school, but he wastes the school day giving a speech and doesn't get to do anything. That doesn't mean he can't be a Hall Monitor outside of school, right?

A wild jellyfish follows SpongeBob home, so he decides to keep it. The jellyfish loves to party and dance. Unluckily, SpongeBob's house turns into a party overnight with more jellyfish coming by the second.