The criminal "boxer", who has been the uncrowned king of a prison for decades, has his first age-related difficulties in maintaining his position. When his former gang member "Henne" told him that he had found Boxer's great love, Kathrin, who had disappeared over the Internet, he was ready to accept the transfer from the prison to the senior barracks. Once there, he meets "Wallberg", the third member of the group, because of whom the former "boxer gang" broke up. Boxer's goal is now to break out to catch up on what has been missed with his Kathrin, Wallberg would like to let it rip again and finally clear Henne.