Son 'Makoto' who was against his father's remarriage. However, his father remarried and started living with his mother-in-law 'Nozomi'. One day, Makoto learns that Nozomi is cheating on her and begins to harbor wicked feelings towards her, and begins to make sexual demands on her... The mother-in-law who turned into a son's sexual processing tool is drowning in pleasure while enduring the act of masochism as a captive of the son's meat stick!
