At sixteen, Shen Zhiyi confessed her feelings to Qiao Yichen, but he told her that dating too early would interfere with his chances of getting into Tsinghua University. Determined to follow him, she vowed to get in too. On the day of the college entrance examination, her father was suddenly involved in a car accident, leaving her unable to meet the boy waiting for her in the rain. Six years later, she is selling roasted sweet potatoes to support her family when she reunites with him, now an executive at a Fortune 500 company. But he still resents her for disappearing without a word. By a twist of fate, she joins his fiancée Yang Li's company as a wedding dress designer. After a drunken heart-to-heart, she discovers that his door lock password is her birthday and that she is the only person left in his contacts. When he books a flight to Europe, she rushes to the airport, rises onto her tiptoes, kisses him, and finally says the words she has been holding back for six years: I love you.