Little Jenny Spotter is afraid of thunderstorms. What kid wouldn't be? Her father tells her there's no reason to be scared - thunderstorms are caused by a race of friendly giants called Thunder-Kickers. One night, during a really bad storm, Jenny hears a loud crash outside. She discovers a Thunder-Kicker has fallen out of the sky and landed in her backyard! Jenny wants to help her new friend get back home, but she'll have to overcome her fear of the thunder to do so.