Neurosurgeon Gu Yunzheng meets Su Wei’an, a former doctor who abandoned her career, during a medical mission. As their love grows, he discovers she suffers from Huntington’s disease, a rare and incurable disorder. Driven by compassion and devotion, Gu Yunzheng leaves his promising career to dedicate his life to researching a cure, standing alongside his partner to bring hope to patients and families facing the disease.