A husband discovers that his wife's lover is his childhood best friend. Their affair appears to have lasted about six months, from his wedding anniversary until the day he sees them enter a hotel, with the pair meeting and having sex almost every day. Searching her computer while she sleeps, he finds countless kissing photos and private sex videos. Instead of confronting them, the evidence arouses him, so he hides cameras throughout the house to watch more. Seeing his wife choose his friend's cock more often than she has sex with him twists his desires further, and he cannot stop masturbating to her betrayal.