The purpose of the housekeeper

Jae-hoon, who came to rest at her villa after a long time, vows to lead her celibate life, calls a housekeeper to clean up her boredom. Soon, a beautiful housekeeper comes into the house, and he has an amazing experience. When she touches water, her body reacts, and she sends a secret signal to the woman as well. I don't understand, but Jae-hoon feels a strong attraction to her. But he learns that the beautiful housekeeper has a shocking secret...