The Seven Killer Man

Seven stories of seven friends who kill innocent people. Whether there is a reason or not, their commitment to each other is still more dominant. But because of a promise, is their relationship slowly falling apart? One hides a secret to cover up the sin committed. Someone is isolated and does not want to leave the place. Even if the rules are broken, friendship will still prevail. Someone is separated but the promise will not be broken. Son of the law if pretends to be innocent. Kindness but with a price. The latter will finish the game they started. And in what way are they able to kill?