Two years ago, Maki married the company president where she worked, suddenly becoming the stepmother to his children, Kaya and Makoto. However, after her husband's sudden death, an unusual relationship forms between her as the stepmother and her stepson, leading to an unstable family life. Torn between conflicting emotions and uncontrollable desire, this story portrays her inner and physical struggles as she gradually awakens to true love. Brought to life by a stellar cast and a talented female director, this is a realistic and emotionally powerful erotic human drama.