A man who can't forget his ex-girlfriend for years. One day, his brother-in-law said he wanted to introduce someone he wanted to marry and brought her to him, not realizing that she was his ex-girlfriend. The man decides to forget without a second thought, but so far he hasn't. But now he has become his sister-in-law's girlfriend. But now she is his sister-in-law's ex-girlfriend. A few months after the marriage of his brother and sister-in-law, the man learns that his sister-in-law is forced to have perverted sex every night because of the sexual desires of his brother, whom he does not even know. The man decides to take his sister-in-law from his brother for the sake of the woman he once loved.