This manga is about life of Alexander Anderson before he become a member of Iscariot. He is a mafia assassin 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 organization found the church he worked. Threatening Anderson with killing the nun in the church, organization menber Flanders demanded the return of the stolen "goods" - 50 kilo of heroin. Instead of return debts he defeat Flanders and his crew, and rescued the nun. Now the two of them are fleeing from the organization...