Seventeen years ago, a flood separated a brother and sister. Cheng Yuanshan dragged his injured leg to search everywhere, and finally reunited with his sister Cheng Nian at her graduation ceremony through that old electronic watch patched with blue tape. Her boyfriend despised him for being poor and shabby, forcing Cheng Nian to choose between them. Without hesitation, she tore up her hard-earned diploma and chose to protect the brother she had been separated from for many years. From squeezing into a cramped rented apartment to weathering workplace storms together, she never wavered in the slightest due to wealth or poverty, and he used all his tenderness and confidence to prop up a world for his sister. The family affection that had been separated for seventeen years was finally fulfilled and returned.