If your wife can wash a stranger's anus for ten minutes, you'll get 1 million yen. You can use the towel. You'll do it, right? The wife, lured by the 1 million yen, takes a naughty chair to a hot spring full of men! Although she is confused, she takes on the challenge, but the man's frustration explodes with her unfamiliar hands. When she shows him how to wash, he forces her to wash his body. And then, he finally inserts it raw!?