Brother, don't cum inside, I'll get pregnant.

The film tells the story of a pair of biological siblings who fall into a taboo romance within their family environment. The sister repeatedly begs her brother, "Don't cum inside, I'll get pregnant," yet succumbs uncontrollably to passion. The plot revolves around the siblings' secret relationship, filled with tension, excitement, and moral conflict, exploring the emotional entanglements and physiological urges under the theme of incest, culminating in a climactic ending.