Yaqin Lu is followed by Erxun Sang because she resembles his sister Sangsang. He asks Yaqin to masquerade as his sister in order to comfort his grandma whose sons all passed away. Sangsang was her only granddaughter who has broken up with her boy friend and is sent to America by her brother, where she commits suicide. Erxun and Erkai keep this secret from their grandma and want to show Sangsang to her in her late years. Yaqin accepts their request and goes to comfort their grandma and love ensues between Erkai and Yaqin.