A female college student ends up in a physical relationship with a woman who is like a kind and wonderful older sister to her. When she visits her sister's room, she is suddenly stimulated and made to cum in the entranceway. On the sofa, her hands are tied and she is made to cum in an extremely embarrassing state. The female college student cums many times, and even as her sweaty skin is washed away, she is relentlessly stimulated and made to urinate. Intoxicated by this new pleasure, the two women take turns climaxing in what feels like an endless pleasure, and in the end they both cum.