CIA spy Bob Ho (Jackie Chan) is leading a double life. He is attracted to his next door neighbor Gillian (Amber Valetta), but can't tell her what he really does for a living. He decides to retire from his job in an attempt to be with Gillian, but her two kids Farren (Madeline Carroll) and Ian (Will Shadley) are not so keen on Bob's nerdy manner. When Gillian has to go out of town, Bob volunteers to watch Farren and Ian in an attempt to win them over. However, things get complicated when Ian accidentally downloads a secret file on Bob's computer. Suddenly, Russian terrorist Poldark (Magnus Scheving) shows up with the intent to kill Bob and the children.