Xia Lanxin, a freshman, fell in love with Gu Ran, the school idol of the Department of Finance, because of her voice. A love lasts for 5 years, 5 years of love and 5 years of secret love. The whole world knows that I like you, only you don't know, or you pretend not to know. In the year of graduation, Xia Lanxin was going to Australia, but Gu Ran did not persuade her to stay. A year later, Xia Lanxin knew that Gu Ran had broken up and decided to buy a plane ticket to return to China. Will he keep her this time? . . . . .