Three years ago, Rie lost her husband in a traffic accident and has been living with her non-blood-related son Yuuma. The young and sexy stepmother captivates Yuuma. Meanwhile, Rie has been maintaining her chastity for the past three years, leading to days of unfulfilled desires. One day, the wife of Yuuma's brother Haruma, who also died in the same accident, visits, causing their relationship to take an unexpected turn...
