Shortly before the Jupiter 2 prepares for lift-off, Penny goes to get her scarf from a cave. Once there, she encounters an alien boy by the name of J-5 who begs her to take him with her family when they go. He says that if they leave him behind he will be eaten by a Zaybo. Penny asks what a Zaybo is, and a lion suddenly appears nearby. Frightened, Penny runs to her father for help. In reality, the Zaybo is J-5's shape-shifting pet created from his mind, but he keeps that a secret from Penny and the others. Penny finds her father and tells him about how J-5 saved her from the lion. All three then hurry back to the Jupiter 2 and the ship takes off for outer space.