Lin Meng, who grew up in an orphanage, has long had the shadow of being "abandoned" engraved in his bones. When she met Shen Yunshan, she thought she had finally found stability - he was a rigorous professor and the "dad" who gave her hot cocoa and accompanied her to weather thunderstorms. The two used family ties as a bridge to gently stitch together each other's loneliness. She held on to this warmth and asked, "I am your biological child, right?" He responded with countless nights of hugging each other, making the words "father and daughter" the most reassuring support for each other.
But heartbeats always sprout inadvertently: his gentle look back under the sycamore tree, the steady heartbeat in his arms on a thunderstorm night, her silent companionship when he was fragile on the anniversary of his death... The boundaries of family affection gradually blurred, and the concern between those "father and daughter" quietly turned into an uncontrollable love.
When their biological parents come looking for them with guilt, the fears of the past surge again; when the title "Dad" can no longer hide the beating of their hearts, how should they face this love that spans identities and begins with family affection? From father and daughter who redeem each other to lovers who run in both directions, this emotional transformation with warmth as the background will eventually prove that true love has never been about blood, but only about sincerity.
