share time: 2026-01-06 00:31:00
22-year-old office worker Lin Xiaotang accidentally travels back to 1988—her grandpa Lin Jianguo's 18th year—after complaining about his "unconfessed youth crush" and triggering an old pocket watch. She barely gets her bearings when she sees Su Wanning in a light blue dress at the yard gate: "Is Lin Jianguo home?" This is exactly the "ice-cold Principal Su" her grandpa wrote about for half his life! Determined to help grandpa pursue his love, Xiaotang teaches him to write cheesy love letters and drags him to give Su hand-grown roses. But grandpa gives the letter to Su's brother, and Xiaotang ends up being "partners in crime" with Su—Su tilts the umbrella toward her in the rain, their fingers brush when Su tutors her math, even neighbors tease: "You two look like a couple!" Xiaotang panics: I came to help grandpa, why am I falling for the "grandma candidate"?
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