Serina Ayaka, crowned Miss Kusunoki Girls' Academy during the school festival, falls into a trap set by the Yabuta Group, the organization running the school. Along with Ami (Akina Isshiki), the first runner-up, she is kidnapped and imprisoned, forced to perform in a slave show while undergoing brutal training. As they endure humiliation, restraint, rape, cowgirl position, confinement, and degradation, the two girls grow closer through their shared suffering, their bond deepening amid the horrors of becoming sex slaves and cumdumps.