Sharp, a Texas patrolman, is honest and upright, and he has never been soft in cracking down on crime, which has been recognized by residents and police bosses. However, his dedication cannot be understood by his family. His wife chose to divorce and live alone with her daughter Emma, leaving Sharp alone in the house of Nuoda.
In a mission, Sharp's partner swanson was injured in order to capture witness Bauer and testify against Cortland. Sharp traced back to the depths of the street, only to find that Bauer was killed and FBI officer Eddie was injured. Sharp failed to catch Bauer's killer, and Cortland was released because the witness could not appear in court. A few hours later, five girls from the school cheerleading team came to the police station and claimed to have seen the whole process of Bauer's murder.
After a night of questioning, the cheerleaders failed to identify the murderer. Thinking that the girls as witnesses are likely to be silenced like Bauer, Sharp has to protect them at any time. But this is not a long-term solution. In order to be with the girls for 24 hours, the police came up with a way to make Sharp pretend to be an assistant cheerleader. So Sharp officially became the assistant coach of the Buffalo Cheerleading Team. In order to protect the witness, all the girls moved into Sharp's house. In addition, Sharp's people also placed camera equipment in the opposite house to monitor the safety of the girls.
From the day they lived with Sharp, the girls' behavior was restricted. For safety, they are not allowed to go out at night, even during the day, even if they go to class, Sharp will not leave. The girls are very dissatisfied with the loss of freedom in life, but there is nothing they can do in the face of Sharp, who is overbearing and mean. The avant-garde ideas of young girls are in sharp contrast with Sharp's conservatism, so there are many contradictions between them.
Sharp happened to meet Molly, a teacher who teaches English literature at school, in the supermarket. Both of them have a crush on each other. Molly accepted Sharp's invitation and went to his house for dinner. The girls dressed up sharply for this, and they looked young and chic. Girls remotely control Sharp upstairs through cameras and wireless headphones. The date was very successful. For the first time, Sharp thought these girls were actually cute.
Eddie went to Sharp's boss and asked for a witness, but he was opposed. But he couldn't contact Sharp himself, so he found Emma. Emma was completely unprepared for Eddie because her mother went on holiday and Emma left Eddie at home. In fact, Eddie was employed by Cortland, and his purpose was to kill all the witnesses. By inquiring Emma's communication records, Eddie found Sharp's phone number and followed Sharp's car to the mobilization meeting. Eddie planted a bomb on Sharp's mount. Fortunately, Sharp found out in time and escaped with the girls. Only then did the girls realize how dangerous their situation was and how important it was for Sharp to stay with them all day.
Eddie finally had a showdown with Sharp. He hijacked Emma and asked Sharp to bring a huge sum of money to the border in exchange for his daughter. Sharp went alone, and Eddie took the money but wouldn't let Emma go. Instead, he took her to Mexico by coach. At this time, the cheerleading girls appeared in time. Some of them are saving Sharp, and some are dealing with Eddie on the long-distance bus (listening to music). Emma was finally rescued, and Eddie was captured by Sharp and the police who arrived.
Cortland was brought to court for murder. Six months later, Sharp and Molly entered the marriage hall. The girls are really happy for Sharp. Although Sharp is no longer their assistant coach, they have sincere feelings for Sharp.