Season 3 - Guilty

Oskar sets out on a mission to find the person who sent out a nude photo of his sister to the entire school. He will do anything in his power to make his sister happy again. Oskar' best friends Astrid and Tristan helps him start an investigation - on the condition that Oskar behaves. It's not easy for the three friends to figure out who is telling the truth and who is hiding something. And the farther they get in their investigation the harder it gets for Oskar to control himself and his methods for getting justice.