A man wakes up in the middle of the night at home and goes to the kitchen to look for something to eat, when he realizes there are dirty dishes in the dishwasher, the thought occurs to him that someone else in the house is awake, so the man with insomnia problems decides to investigate while recording everything. Upon entering the room where the desktop computer is located, he notices that his younger sister is sitting there watching porn and masturbating. The sister is so caught up in her pleasure that she doesn’t even notice her brother entered the room. The perverted brother, driven by his animal instincts, takes out his penis to join his sister in a family masturbation session without her realizing she’s in the room. After a few minutes of lust, she realizes she’s being watched and jumps in surprise. Surprised, the brother tries to calm her down so she doesn’t scream. Saddened but still aroused, she covers her face but then shows him some photos and videos where she’s being fucked. Surprised that his younger sister is already being fucked, they laugh a little and start taking off their clothes, eventually deciding to have sex.