Terminate Them Mr.

A guy named Brix Yang is in a group who used to murder people but in a good way, they kill who commits crime, people who bully weak people, and those law breaker. They called their group as Dolofonía Group which is murder in English. He got a invitation by a organisation who known by having a unknown leader, a organisation who killed people to satisfy their selves, and a organisation that's a opposite of them. What will Brix do? Will he accept the invitation or reject it?