"I'm sorry... Mother is just a lowly female slave..." Yura Hazuki plays Nakashu Yurara, an ordinary housewife living with her family, but secretly a perverted, masochistic M woman. To her sons, she appears a gentle, devoted mother, yet in truth, she yearns for her master's cruel training and abuse. As the family's hidden bonds take a shocking turn, the sons accidentally discover their mother's true nature, drawing them into a forbidden, twisted love. The Nakashu household begins a slow descent into a dangerously seductive world of incest, BDSM, and sexual slavery.