Aoi, a nurse, is stressed out by the hard work of her daily job and is always looking to release it through sexual means. She has no opportunities to meet people at work, and whenever she sees a happy couple, she has a sexual urge to cuckold the husband. She sets her sights on a newly admitted, earnest young man who is faithful to his wife. At first, the young man is a little hesitant, but gradually he becomes captivated by the extremely erotic nurse.