To save her critically injured brother, she secretly donated a kidney, but was burdened with stigma. Five years of imprisonment left her with seven days to live. The third party, who falsely claimed credit, persuaded her to hand over her last kidney. As he entered the engagement hall with his new partner, she lay on the operating table to repay that promise with her life. He discovered the truth during the wedding and searched for her. The operating room light turned off, leaving his regret.