Isaac Kane is a single father with a dark secret: he was once the most feared killer on the planet. After making a vow to his dying wife to never kill again, he now spends his days as a down-on-his-luck single father. But when his daughter is kidnapped by a major crime family, he must break his vow... and kill his way through the Russian Mafia, while re-taking his place as a near-mythic killer that haunts the nightmares of the wicked.