On his first day as a fourth-grader, Sune is welcomed by an unwanted surprise. A new boy is in his seat, and he's everything Sune wants to be. Not only that, but his name is also Sune - it's the worst possible start to the fourth grade.
Wille has always dreamed of becoming a superhero and fight crime alongside his father. This dream is shattered when Wille's brother, Charlie, is born. Charlie gets all the attention, and on top of that – he has superpowers. When a supervillain and an evil scientist enact a plan to overthrow the city, Wille and Charlie must put their differences aside and work together as a team. Can an infant and his envious brother save the city?
