Based on a graphic novel by writer-director Kevin Grevioux, King of Killers follows former Agency hit man Marcus Garan (Alain Moussi) as he attempts to unravel the mystery behind a tragic incident. When offered a $10 million contract to eliminate the world's greatest assassin, Marcus travels to Tokyo to meet the client (Frank Grillo), but discovers other professional killers have been invited as well. Now Marcus and the others must confront this deadly, mythical assassin...or die trying.