New teacher Rion gets into a bicycle accident on her way to work, even though she doesn't want to be looked down upon by the school or the PTA. She is called to a hotel room as the absolute assailant and victim, and is subjected to brutal settlement negotiations under house arrest. She is forced to have sex in the name of good faith, and is dominated by carnal desires to the point that Kokoro is broken. Even in a hopeless situation, the busty teacher's body responds honestly, and she is turned into a sex slave!