A drama work that easily induces a forbidden relationship that should never happen. Yurika who took over her ex-husband's stepchild and lived a modest life for many years. However, such a daily life is completely changed by "experience event technique". Yurika was only meant to be a tour, but she was thoroughly immersed in the event, and her sexual relationship with her son-in-law became a tool for maniacs to play. "Mother!"