As teenagers, they draw close under false pretenses because of a family grudge. He means to take revenge, but falls for her along the way. Mistakenly believing they are siblings, they are separated for eight years. After making it through the pandemic and facing life and death, they finally clear up every misunderstanding and spend the rest of their lives saving each other.
A scheme and deception spanning more than twenty years in the previous generation crush the youth and love of two generations.
At seventeen, Zhuo Chenyu blames the heroine’s mother for his family’s breakup, believing her to be a homewrecker. He deliberately approaches Su Zixi to take revenge, but falls sincerely for her step by step. He cruelly breaks things off before the college entrance exam, thinking they will be even from then on. Yet he cannot resist changing his college application and heading to a university in the far north, where he secretly protects her and clumsily fends off every unsuitable suitor.
Just as the two finally put the past behind them, break the ice, and confess their feelings, they accidentally overhear a conversation between their fathers during winter break of their senior year. They mistakenly believe they are half-siblings, and the shackles of morality force them to pass each other back-to-back at a train station. They part for a full eight years.
She struggles alone in the workplace, while he builds his career far away and reaches the top. No matter how many times they run into each other at business events, they can only pretend to be strangers. When her mother’s death reveals the whole truth, he learns that she is already engaged.
In 2019, the COVID-19 pandemic sweeps across the world. He heads against the flow to Wuhan, falls ill in a temporary hospital, and she rushes to the epidemic zone as a volunteer. Beneath their protective suits, they recognize each other at a glance.
In the face of life and death, every barrier, misunderstanding, and missed chance melts away. They reunite amid the crowd at a concert and finally confess their long-delayed feelings. After all their twists and turns, they at last spend the rest of their lives fulfilling the love that began in their youth.