A spy on an undercover mission gets married and adopts a child as part of his cover. His wife and daughter have secrets of their own, and all three must strive to keep together.

A spy known only as Twilight needs a family as part of his undercover mission, so he quickly marries a city hall worker and adopts a child and dog. Unknown to him, his family has secrets of their own: his wife Yor is an undercover assassin, his daughter Anya is a runaway psychic who can read minds, and his dog was from a laboratory that gave him the power to tell the future. All these four subjects must bond together as a family to manage their own affairs and be together as best as they can.