Stan Minton (Rob Schneider), who lives in Los Angeles, is a slick and successful real estate businessman. He was arrogant and full of big talk, and was inevitably involved in a fraud case and faced a three-year prison sentence. He went to a notorious prison known for violence. But before that, Stan had six months of freedom. He was in a very irritable mood and had a bad time with his girlfriend Mindy (Jennifer Morrison). In order to prevent being raped in prison, Stan began to visit his teacher and friends and practice martial arts. During this period, he was guided by a mysterious martial artist (David Carradine). Six months passed in a flash, and Stan finally ushered in an important moment of serving his sentence. Will he become a bus that everyone can get on? Or a man of the hour who is invincible in prison? The answer is about to be revealed...