Su Yan Xi is forced to take the place of her twin sister and gets into a contract relationship with wealthy president Gu Xi Cheng to make his sick grandmother happy because she wants him to find love. Su Yan Xi's sunny and optimistic personality melts Gu Xi Cheng's icy outer shell, revealing a warm and soft heart. The joys of love are battered by the pain of her lies keeping her real identity from him, but what can Su Yan Xi do when she's unable to reveal the truth?