One morning, his mother came into the bathroom while his son was taking a bath. It seems she overslept and didn't have time to get ready. His mother didn't care that her son was there and washed her body, but his son was excited by his mother's big, lewd nipples and began to think of her as a woman rather than a mother. Unable to suppress his burning desire, the son raped his mother in the night... and then the mother...