A son who is unable to take care of his frail father due to work installs surveillance cameras to check on his father's safety while he is away. He hires a caregiver to look after him, but one day he witnesses an unexpected sight. The elderly father proposes to the female caregiver and plans to remarry. What's more, the woman divorced after giving birth and is now producing breast milk. The father continues to suck on her breasts as if he is sucking on them hungrily. Filled with curiosity, jealousy, suspicion and a host of other feelings, the son sets up hidden cameras throughout the house to spy on his father's life. The son can no longer suppress his lustful desires towards the young woman who is having a lewd sex life with his father...