In an homage to classic and current musicals, the gang deals with the drudgery of detention. The gang is sitting in the cafeteria, excited that it's musical week at Highlands. Finally, they don't have to just sing the classics. Before they know it, the entire lunch room is swept up in a musical number about musicals. Mr. Pesckow storms in and punishes the gang and six other students for starting the whole mess, but not before giving his own big finish, dancing on a table. In detention, the gang envisions themselves as prisoners, playing the harmonica, freaking out as the walls close in, and trying desperately to escape. Mr. Pesckow tries to quell these nightmares, detention isn't that bad. Suddenly, Matt McBride enters with a tuba stuck to his head. Mr. Pesckow leaves to deal with it, leaving the kids alone. It isn't long before the gang breaks out in song and dance again, excited for detention to end. The other six kids shush them, not wanting to get into anymore trouble, and it is ...