Taesung, who was studying for exams with his girlfriend, decides to go to school at his brother’s house in Seoul to focus on his studies. As he stayed with his younger brother and sister, Taesung was interested in his young and beautiful sister-in-law, and his sister-in-law, whose relationship with her husband was estranged, became more and more favorable to him….

My father remarried my first love’s mother, I never confessed and looked at her from afar… Now we are considered ‘Brother and Sister’. “Do you like me too? Could we live a normal life?”