Due to her remarriage, the woman becomes the stepmother of a young man—and a woman obsessed with hidden camera voyeurism. The young man discovers her weakness and initiates a "bargain" to protect himself. Their relationship gradually deteriorates as the stepmother is driven into a corner, unable to escape her stepson's control. All events are recorded by cameras set up by the young man. As their twisted bond deepens, both are drawn into increasingly vulnerable and exposed situations.