In this town, an incident has broken out in which young, beautiful girls with large breasts are being targeted by an evil organization called the Pie Haters. Yuuki Ai, a girl with super-beautiful I-cup breasts who received a divine mission from the goddess, transforms into the Pretty Masked AI (Ai) and fights. However, the Pie Killer's Bust Drainer absorbs energy from the AI's breasts, rendering it unable to fight! The AI's large breasts are abused by the Pie Haters monsters, who sexually subjugate it. Her breasts and beautiful buttocks are whipped hard, leaving swollen wounds, and the AI writhes in agony, foaming at the mouth like a crab. The monsters, who hate large breasts, pierce the AI's breasts with their weapons, killing it. [BAD END]