Six years ago, Lin Wanqing was forced to break up with her boyfriend Gu Huaizhi. When Lin Wanqing was heartbroken and fell into a low point, she learned that she was already five months pregnant, which reignited her desire for life. Six years later, single mother Lin Wanqing is suffering from a serious illness. She chooses to hide her condition, choosing to hide her illness, teaching her daughter Niannian to live independently during the last moments of her life. Niannian has long sensed her mother's abnormality, yet keeps the secret of "not letting mom know." Mother and daughter hide things from each other in the limited days, yet love each other deeply.