Shiori Kuraki, intending to meet an older man for paid dating, goes to a hotel planning to take his money and run. However, she is caught by the man, kidnapped, and taken away. When she regains consciousness, she finds herself imprisoned in a sterile, empty room. "You need... punishment," the man says coldly, placing a gag in her mouth and tightly restraining her limbs. With no ability to move or speak, the brutal bondage training begins. Trapped in this degrading situation, how will Shiori manage to escape? The story unfolds through her psychological turmoil and the man's cold, relentless domination.