A college student named 'Ran' is having an affair with a married man. She thought she was just going on a regular hot spring trip and was excited about it. However, the inn they arrived at is famous for voyeurism and orgies, a lewd hot spring. Her lover brought her there without telling her anything about it, intending to train 'Ran'. He issues one humiliating command after another. Through repeated training, she degenerates into an M-slut...
