Drug dealer Chris's wife takes away 3 million dollars and their son escapes. Chris shoots and kills an insider while investigating his wife's whereabouts. The murder gives the detective Jinbao (Arnold Schwarzenegger Arnold Schwarzenegger) a chance to take him into custody. However, if Chris pleads guilty, Jinbao must also find his wife as a material witness. The clues available to the police were so limited that Jinbao and his female colleagues had to come to a small town and go undercover to look for Chris's son in kindergarten disguised as a teacher. Due to the acute illness of her female colleague, Jinbao had to take on the important task alone, dealing with a group of very restless imps, and there was a spark between Joyce (Penelope Ann Penelope Ann Miller) and Jinbao, a female teacher in the same school. Jinbao's teaching career gradually went smoothly, and at this time, the identity of Chris's wife and son surfaced, which surprised Jinbao.