FBI agent Ma Gang (Martin Lawrence Martin Lawrence) has had a bad time with his wife and child recently, and his family always blame him for being too busy with his work and neglecting to take care of his family. Ma Gang was in low spirits on this side, but a big case came to him. It turned out that one day all the computers in government agencies suddenly crashed, and later found that many top secret documents had been browsed. FBI suspects that computer engineer Tom (Mark Moss Mark Moses) is a major suspect, but has been unable to find evidence, so he has no choice but to send Ma Gang out again. It was hard to disobey the army's life. Ma Gang, who was unwilling to work any more, only became a fat mother again and infiltrated into Tom's house as a babysitter. Here, he accidentally found a noisy world. He had a lot of fun with his three children, and he also knew how to regain the happiness of his family.