A leading scientist devoted his life to his country, and as he lay dying, his only thought was of his first love, Lin Yuanyuan. When he opened his eyes again, he had returned to his first year of middle school in 1998. This time, he would hold on to the girl with the mole between her brows, awkwardly protect her, and make up for the regrets of two lifetimes. A lighthearted slice-of-life romance set in the past, where an old ache finally finds its happy ending.