Train Heartnet, also known as "Black Cat," was an infamous assassin for a secret organization called Chronos...until he abandoned that cold-blooded existence to live on his own terms as an easygoing bounty hunter. But is Train's past as far behind him as he thinks? With her fate lying in Sephiria’s manipulative hands, Rinslet becomes a pawn in the Cerberus commando team’s search for Creed and their ongoing attempt to destroy the Apostles of the Star. Meanwhile, a stranger sends Train, Sven and Eve on a mission to find a missing person they may already know all too well.