Every year, on a large island just outside of Iceland, there is a huge football tournament for kids. Ten-year-old Jón and his team go to compete, but he will have to grow up faster than expected, both on and off the pitch.

Rainbow Party tells the story of Sofia, who realizes that if you can't beat them, well then you better join them. In her quest to be accepted by the popular girls in her class, Sofia finds herself sacrificing her true friendships and morals. Whoever said that teenage girls were innocent - well, they were so wrong.