Set in Boston in 1978, a meeting in a deserted warehouse between two gangs turns into a shoot-out and a game of survival.

Unlucky assassin Ladybug is determined to do his job peacefully after one too many gigs gone off the rails. Fate, however, may have other plans, as Ladybug's latest mission puts him on a collision course with lethal adversaries from around the globe—all with connected, yet conflicting, objectives—on the world's fastest train.