The hero and heroine who had to part with their first love due to a tragic family history, reunited 12 years later, a heart-wrenching love story due to the cracks in their hearts. Yoon Seo-wan, the daughter of the hospital director who lost her eyes in an accident and closed her heart, and Park Dong-soo, a boy who wanted to protect the one he loved, started a love story. Although it is heartbreaking, it is pure and clear like an angel's eyes.