When a 17-year-old high school student is brutally attacked by one of her classmates on campus, Detectives Stabler, Benson and Fin investigate Luke Breslin the prime suspect. When asked about attacking his friend, Breslin becomes enraged and attacks Det. Fin but when later questioned, he claims to have no memory of attacking anyone. Meanwhile, Stabler realizes that Breslin is the son of his former partner Pete Breslin and Detective Cragen suspends Stabler after he makes a number of unprofessional choices in trying to go easy on his friend's son. As the investigation continues, Stabler tries to help both Breslin and his son, but begins to lose control because of his own rage. Stabler turns to Dr. Rebecca Hendrix for help coping with his own anger issues.