Marina Kyono works as a maid at an inn, diligently striving to become the proprietress one day. However, a man takes notice of her and begins subjecting her to cruel punishment. The abuse intensifies over time, eventually escalating to the ultimate torment known as water confinement hell. Beautiful yet pitiful, her pure nature is exploited as she gradually falls under his control. Taking advantage of her vulnerable position as a newcomer, he subjects her to lewd and brutal training, slowly breaking down both her body and mind. Through this process, she transforms from a simple inn maid into an object of his desires.