Two boys at school fall in love, but their families found out and split them up and send one to another country. They meet several years later at one company as a subordinate and boss. They become secret lovers, but the coincidence is again divided into several years. She secretly forty years as men who already have families. Their relationship restarters disrupt disease.

After a dying wish made a promise to fulfill, 'a past promise' becomes broken. Then comes the revenge from the hurt it have caused both of them.