Description：Bob (Jackie Chan) has been in love with his neighbor Gillian, who has three children. However, the three little kids don't like this cowardly, boring, robot-like pen dealer. But Bob is actually a secret agent who is about to retire. Gillian went out for some reason, so Bob decided to take care of the children. It was enough of a headache for a grown man to deal with three quirky children. The children accidentally downloaded a bacterial formula of a group of criminals, which attracted the pursuit of the bad guys. At this time, someone in the CIA also wanted to get the formula. In the process of protecting the children, Bob's identity was exposed, and Gillian broke up with him to protect the children. In order to fight crime and protect the children, Bob must start again... This film is Jackie Chan's latest film after the "Rush Hour" series