Three male students are infatuated with Tsubaki, a kind and soothing married woman who works part-time and always greets them with a gentle smile, comforting everyone around her. They finally fulfill their dream of going on a mixed-gender hot spring trip together. As they drink alcohol, their romantic feelings and sexual desires intensify, and the situation unexpectedly escalates into an intense group orgy. The moment they touch Tsubaki's naked body, they become instantly aroused and end up ejaculating right then and there. Moved by a serious confession from the stoic guy, Tsubaki is emotionally stirred and rediscovers pleasure in sex after a long time. Her warmth and tenderness as she gently guides the virgin's cock through sex education deeply shake the hearts of all three young men. Fueled by excessive drinking, the encounter further develops into a wild 4P gangbang. The accumulated sperm of the students is unleashed in a total of ten ejaculations, delivering a relentless series of climaxes.