Emilia, 11 years old girl, lives in a Helsinki suburb with her mother. Emilia thinks that she is just an ordinary boring next-door girl compared to other girls. Her best friend Simo is the most unpopular boy in the school. She doesn't want to become unpopular herself, so she avoids being seen in Simo's company. One day Emilia gets a pet hamster, who bites her finger. The following night strange things start to happen: Emilia gets transported to meet the Giant hamster, the leader of all hyperhamsters. Emilia is told that she is chosen to be a Hyperhamster as well.