The Snow Queen follows the life of Han Tae-woong, a brilliant mathematical prodigy who suffers from deep trauma after the suicide of his best friend, Kim Jung-kyu. Years later, having abandoned his academic potential to become a boxer, he crosses paths with Kim Bo-ra, a cold-hearted and cynical heiress suffering from a terminal illness. As they navigate their shared pain and loneliness, they find solace in each other, unaware of the tragic connection linking their pasts. The series explores themes of grief, redemption, and the cruelty of fate. As Tae-woong and Bo-ra fall in love, the revelation of their intertwined history threatens to shatter their fragile bond. The drama is a poignant meditation on how two broken souls attempt to find warmth in the metaphorical winter of their lives, leading to a heart-wrenching conclusion that tests the limits of their devotion.