Changing your life completely is not so easy, especially if you are an average 40-year-old man who grew up in a small town and has never had great success. John Nolan (Nathan Fillion) always considered himself to be such a person until he found himself in a bank during a robbery. Trying to establish a dialogue with the armed robber, he became a true hero in the eyes of an attractive woman and suddenly realized that this is real life! Being a hero, defender, savior, or even better, all at once. Nolan decided to join the Los Angeles Police Department, where he became the oldest rookie. Among his colleagues, he was the subject of mockery, and the superiors saw him as a problem and a cause for concern. Nolan's partner was even afraid to work with him, fearing that his inexperience would either lead to his death or put her in danger. Only a few people in the department understood that his rich life experience, the wisdom of a rookie, his dedicated self-improvement, and determination would ultimately help him become a good police officer. Will John Nolan be able to prove to his colleagues and superiors that serving in the police is his true calling, or will mockery and failures send him to the dump?