That summer when they were seventeen, Gu Huansheng and Lin Xiaoran were the brightest lights in each other's lives. But when they went to different universities, he timidly ended their first love with the words “I can't see a future for us.” The relationship ended abruptly, leaving a wound in Lin Xiaoran's heart that never healed.
Twelve years later, fate brings them together again at work. He's a group vice president, while she's a manager in the planning department, and their different positions and family circumstances stand between them. Deeply remorseful, Gu Huansheng quietly watches over her under the guise of being an “old classmate,” trying to make up for his mistake. From testing the waters with a bowl of egg fried rice, to a taciturn handhold during a business trip to an ancient town, to a promise that she would “marry me in the next life,” their unforgettable love catches fire again amid restraint and emotional push and pull.
But when Lin Xiaoran breaks down after her husband's betrayal and rushes into traffic, Gu Huansheng gives his life to protect her one last time. He shoves her aside, then falls into a pool of blood, leaving behind unfinished words and a bloodstained smile.
He traded his death for her life. From then on, Lin Xiaoran spends the rest of her days moving through a world without him, her despair hidden beneath a calm exterior. The plea to “live well,” which he bought with his life, becomes the heaviest and sweetest chain she carries for the rest of hers.