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.

When Zoe tires of looking for Mr. Right, she decides to have a baby on her own. But on the day she's artificially inseminated, she meets Stan, who seems to be just who she's been searching for all her life. Now, Zoe has to figure out how to make her two life's dreams fit with each other.