Cuffed

Prison can be horrible. The things that are forced to be done, the behavior of some of the guards, and the food served is most likely grotesque. However, one junior high school decides to send the students to an experimental prison- for fun. One of the inmates, Red Sethens (now known as 015), finds this only as a form of torture, and searches all over for clues, resulting in the discovery of a secret blueprint to the entire facility. With the help from Liz Stuart (508) and Quincy Hawking (267), they'll creep through the vents, fend off strange monsters, and survive some large risks, and it's all to call the real police and get home.
(Based on a true story)