Kondo Iku, 50 years old. She lives with her husband and son, but has long been sleeping in separate bedrooms from her husband. In the midst of this lonely life, when her son complained of being unable to sleep, she held him close—and her pent-up desire became uncontrollable, sparking an intimate relationship with her son. From then on, they began stealing moments together behind her husband's back, indulging in secret affairs. Hidden emotions blossomed between them, forging a new and forbidden bond.