"WE'RE NOT HEROES OF JUSTICE WE'RE JUST TOOLS OF ORGANIZATION." Four orphan girls who are about to be captivated by the most deadly and dangerous organization and man that is well-known, Leon Carlos Del Pelagro, the most ruthless mafia. Their freedom and happiness as children will be taken from them at a young age, due to the fact that they have trained them to be assassins. Years pass and the girls ask Leon for their freedom and peace in living in a condition. Will they be free? What path awaits them? Will they find Love when four brilliant male NBI AGENTs appear in their lives?