When Pip the mouse learns that the moon is made of stinky cheese, he has a big idea - he's going to be an Astromouse! Pip makes himself a rocket out of an old funnel and some cardboard, and prepares for take-off. But blasting to the moon is harder than he thought and things don't go quite to plan. On his way home Pip sees a huge reflection of the moon in a pond. The moon has come to him! As he reaches down to break off a piece of stinky cheese, the eyes of a large frog appear and a frightened Pip runs all the way back home. He decides the moon is far too scary for a mouse, and he'd much rather live with his mom instead.