Six years into her marriage, Saki, who works alongside her husband, takes on a job as a home health aide. This kind and generous woman works tirelessly to help make ends meet. One day, she's assigned to a new client, an elderly man living alone after his son moved away. The man, a former real estate agent who made a fortune during the bubble economy, boasts about his stash of cash hidden away at home, distrustful of banks. He tempts Saki with promises of inheritance, even asking her to take care of his intimate needs. "Maybe I'll leave my inheritance to my wife when I die," he says, "Let's have sex until I do, Dad!" Seduced by this lecherous old man, the married home health aide finds herself consumed by his lust, her mature body devoured by his insatiable desires.
