This manga is about life of Alexander Anderson before he became a member of Iscariot. He is a mafia assassin who tried to escape from the police after betraying the organization he worked with. To trick his pursuers, he dressed up as a priest and hid himself in a village, but the organization found the church where he worked. Threatening Anderson with killing the nun in the church, organization member Flanders demanded the return of the stolen "goods"—50 kilos of heroin. Instead of repaying the debt, he defeats Flanders and his crew, and rescues the nun. Now the two of them are fleeing from the organization...