Izuku yagi was framed by the LOV and sent to Tartarus prison for a crime he didn't commit but nobody believed him so he was locked away for months back at u.a class1-a where celebrating because they thought they had finally gotten the u.a traitor but a few months later shigaraki goes live and tell them the truth that there was no traitor and how they sentenced a innocent Person to prison making u.a feel ashamed of themselves so nezu and a few others went to go get Izuku out but he had already escaped Along with a few other prisoners and now that he's free he will exact his revenge on those that wronged him