Swimming instructor, Young-eun is a single mom raising her 7-year-old daughter, So-hyun. However, a series of tragic events happens as So-hyun’s puppy falls from the apartment and dies, and So-hyun…

A pitiless demon becomes powerless after getting entangled with an icy heiress, who may hold the key to his lost abilities — and his heart.

Love never hurt so good for two co-workers who enter a contractual relationship as partners in consensual play, pleasure and pain.