Master spy Twilight is unparalleled when it comes to going undercover on dangerous missions for the betterment of the world. But when he receives the ultimate assignment - to get married and have a kid - he may finally be in over his head!

Yor is assigned to be a bodyguard for a mafia family on a cruise ship by the secret organization Garden. But with Loid and Anya also on board thanks to a giveaway they won, Yor is starting to have doubts about her secret life as an assassin...