A female company president, Mina, is asked to take care of her acquaintance's son, Yuta, for three days. However, Yuta's true identity is that of an incredibly precocious brat! Mina is strict with her employees but kind to her children, but she is taken aback by Yuta's aggressive approach. They take baths together at home, and at work, she secretly takes care of his sexual needs behind the backs of the employees... before they know it, they have developed into an adult relationship! Frustrated, Mina becomes addicted to Shi○ta's dick...