When Scissors runs out of money, he tries to become a janitor but discovers that the job involves way more skill than he initially thought. Meanwhile, Rock and Paper try to motivate Scissors in an unusual way.

Paper falls in love with his next door neighbor Pencil, and when he becomes desperate to impress her, he lies about being a proper inventor. Things spill over when he ends up being the Earth's only hope against an alien invasion led by hippos.