Eight-year-old Kaitlyn is bored staying at her aunt's house. Her parents are away and Aunt Hilda doesn't know much about little girls. However, all this changes one night when Cosmo the moon alien comes to pay her a visit. Kaitlyn is taken to the moon, where she meets Artemis and is given an important mission. Humans are destroying the Earth and unless they act fast it will be too late. With the help of Artemis, it is up to Kaitlyn and her parents to convince the leaders of the world to save the world.Will they succeed in time?