Lu Yaqing (Lu Xiuling) is followed by a man named Sang Erxuan (Qin Han). It turns out that Lu Yaqing looks exactly the same as Sang Erxuan's sister Sangsang. However, Sangsang committed suicide because she was abandoned by her boyfriend Wan Haoran (Zhong Zhentao). Sang Erxuan hopes that Lu Yaqing can pretend to be Sangsang and go see his elderly grandma. Moved by Sang Erxuan's filial piety, Lu Yaqing agreed to his request. After that, Lu Yaqing met the legendary "scumbag" Wan Haoran. However, this man who wanted to become a singer was not as useless as Lu Yaqing imagined. Lu Yaqing, who discovered his singing talent, sincerely hoped that Wan Haoran could get rid of his gloomy past and get back together. As time went by, the distance between Lu Yaqing and Sang Erxuan became closer and closer.