Lee Bom-Yi (Sooyoung) undergoes a heart transplant operation. She then tries to live her life positively for the person who donated their heart to her. Kang Dong-Ha (Kam Woo-Sung) raises cattle. Since he lost wife in an accident, he has raised his two children by himself. One day, Lee Bom-Yi happens to meet Kang Dong-Ha. His former wife donated her heart to Lee Bom-Yi.