Su Niannian, a freshman in the Department of Photography, got lost on Guihua Road on the first day of school and met Lu Yuchuan, a senior in the Department of Architecture, who helped guide her. Starting from the sentence "Classmate, are you lost?", The two experienced ambiguity, confession, love, graduation, proposal, marriage, parenting, and the golden wedding years of growing old together.
Concept: The real sweetness is not a vigorous romance, but the "I am" that has continued for fifty-five years.