When you date long enough, you realize it’s all the same. Passionate love belongs to a reckless youth. At 35, with a decent job and personality, I had no reason to refuse Junho, who truly loves me, so I decided to marry him. I thought my life would be calm—until I met my first love, Hyunho, again at the family meeting. I should reject him, yet my heart keeps trembling. A dangerous relationship begins between brother-in-law and sister-in-law. Their secret meetings are discovered by Suji’s best friend, Haejun. Secretly in love with Junho, Haejun is blinded by jealousy and chooses destruction.