幼い時に母が再婚。社長令嬢として育てられたゆりは、近々結婚を前提としたお見合いをする事になっている。ゆりに密かな恋愛感情を抱いていた義理の兄の悟史は、ゆりが結婚してしまう前に自身の歪んだ欲求を果たす計画を立てるのだった…

When she was little, her mother remarried. Raised as the daughter of a company president, Yuri is soon to have an arranged marriage meeting. Her stepbrother, Satoshi, who secretly harbors romantic feelings for Yuri, devises a plan to fulfill his twisted desires before she gets married…