The beautiful warriors Million Girls Z have arrived to protect Earth's peace! However, they are captured by the Ikamon army, a threat to humanity, and all members are raped. To defeat the Ikamon Demon, the four girls volunteer for retraining in the "Hole of Lust and Time"! Will they be able to overcome the trials of lust—including 4-way anal observation, the licking hell quiz, and the giant brush waterwheel—to defeat the Ikamon Demon?