Bob Ho, a retired spy who has decided to leave his action-packed life behind for something quieter, finds himself at a crossroads when he falls in love with his neighbor, Gillian, a single mother. Bob's life seems to be going well until, while offering to babysit Gillian's three children while she is out, he realizes that nothing is as simple as it seems.
Everything changes when one of the children stumbles upon a secret from Bob's past: a classified device that contains key information about his former life as a spy. This draws the attention of dangerous villains who want to retrieve that information at all costs. Without a moment's rest, Bob is dragged back into the world of espionage. Now, he not only has to deal with the kids' antics, but also protect them from these relentless criminals.
Throughout the movie, Bob tries to balance his role as a "substitute dad" while facing comedic and thrilling situations that push him to prove that he is not just a spy, but a true hero to the kids. With a blend of humor, action, and heart, Bob discovers that being a good neighbor can be just as complex as dismantling a spy network. This whirlwind culminates in a funny and touching conclusion that teaches Bob that family is not always what we think, but rather what we choose.