A son plays pranks on his mother without his father, who is sleeping next to him, not realizing. His mother's private parts gradually get wet and she starts to show subtle reactions. She wakes up from her slumber to find him holding her penis and squeezing her breasts, and she is shocked and horrified, but she covers her mouth to stop him. Perhaps because her body is awakened by pleasure, she can barely resist, and she lets her son do whatever he wants, and before she knows it, she becomes his sex toy.