MIST-210 Ria Kimura, a 20-year-old rookie female pro wrestler, makes an AV debut after reaching a breaking point. Struggling with the tough training, she leaves the dormitory and decides not to return to the ring. She makes her debut in adult videos.

Ria-chan, an aspiring female pro wrestler, has decided to appear in an adult video in a moment of desperation. But then it turns out she is actually a virgin…! While feeling confused, she experiences her first intimate encounter, her first solo experience, and even takes on the challenge of bringing someone to climax using only her mouth and hands. She also experiences a private-style intimate scene and even her first unprotected encounter. In the end… overwhelmed by sensation, she even experiences her first intense release…