Azusa, who lost her husband ten years ago, lives with her only son Kenichi. However, since her husband's death, her son shows no sign of working and has been holed up in his room all this time. The household income comes solely from Azusa's meager part-time job. Kenichi, who demands money from his mother for fun, resorts to consumer finance when he doesn't get what he wants, and his debt keeps growing. Struggling to repay his loans, Kenichi installs a hidden camera in their home and falls for the tempting offer of deferred interest payments…
