Its starts out like your typical cheating husband with his mistress at work. He's controlling and abusive. She, on the other hand, has an affair with one of her besties. She decides to separate herself from him by divorce but he doesnt allow her. He stalks her and tries to win her over, but he fails. He haunts her and tries to give drugs her bymaking her believe she's crazy.

However, its not what it seems. There's more to the stories. I wont spoil the ending, but the way it goes it actually quiet good drama, I think I will rewatch it with English sub. As of right now, there is none.