With his house up in flames, Mob and Dimple find something that resembles his family burnt within the fire. They immediately go to find who's behind this and run into members of the mysterious group, the Claw. Unable to control his rage, Mob disposes of them immediately, but then Koyama and Sakurai from the 7th Division appear before him. They end up meeting up with Teru and Reigen, who were also attacked by members of the Claw, at a secret lair. What could the Claw be plotting?

Three years ago, Serizawa was troubled with about his psychic powers. One day, he was visited by the boss, Suzuki Toichiro. Serizawa ends up trusting him since he's the first person to understand what he's going through. But Mob then brings up the fact that Serizawa is being used and tells him, "I'll be your friend." Hearing Mob say that, Serizawa... Meanwhile, after defeating Sho, the boss starts gathering up the energy he was sharing with his followers and turns into an energy monster.