Eleven-year-old Hedvig has a secret. Her father is a superhero and she is next in line in her family. There's just one problem: Hedvig is totally unathletic and prefers to spend her time playing computer games. Bad prerequisites for a budding superheroine. No wonder her father chooses her more talented and arrogant cousin as his successor. But not with Hedvig! With the help of her cool grandma, she starts her own personal superhero training.