On a hot summer day in the mountains, Izumi Shiraishi meets two sadistic men through a chat app and enjoys an outdoor threesome. Surrounded by nature, she tries to suppress her screams of pleasure, yet is overwhelmed by continuous orgasms. The humiliating play at the riverbank brings a thrilling mix of exposure and the sweltering heat, igniting her body with intense desire. Sex in the forest, heightened by the wild atmosphere and raw stimulation, delivers the ultimate excitement.