Six minors (16 or 17 years) answering to the nicknames of Joe, Mario, Suppon, Baremoto, Biceps and Cauliflower are put into a reformatory for offenses such as aggravated assault, swindle, flight, etc. Their stay in hell begins immediately. Accommodated by a doctor pedophile, they are placed under the monitoring of a despotic and brutal crew. Companions of cell of certain Sakuragi (called Anchan), the tension flares up between the band of buddies and their new "friend". A brawl breaks out and our six prisoners are done rossés by mysterious young man thanks to his boxing talent.