A monstrous tree comes to life when Alex decides to disobey his mother. His imagination brings him to being a superhero and a ninja. He tells his two friends-Eric, who is a daredevil, and Sally, who loves to wear shoulder pads with her dress-about the scary encounter with the tree. The two team up with Alex for an adventurous day and end up at their favorite ice cream shop. Alex soon finds out that the monster will disappear when he listens to his mother.