A group of young students at the Police Academy gets into a fight at a local restaurant and are at risk to be expelled from the profession. Then comes in a high rank from the police authority, ready to offer them a second chance. If they can succeed his training, they can become policemen and all their past crimes will be erased. However, the training is very atypic. They will drop the kids in the middle of an unfamiliar city with nothing else than a cellphone (to call if they chose to drop from the training) and a bracelet (to keep track of their location). They will have to survive forty days in this city by themselves. One of the student, Yu Zui doesn’t want to follow the instructions and chose to find everyone else to ally together…