Zhu Lianshengnan, who had everything going wrong after graduating from college, accidentally obtained a treasure that could return him to the "old time". In order to save some of the mistakes she had made, she decided to let time repeat itself, but unexpectedly discovered that the "other people's child" in her mother's words - the boy next door, Gu Mojuan, had a huge secret. Before the secret was warm in his arms, Zhu Lianshengnan, who returned to reality, was forced to start a "living together" life with Gu Moju because of a fire at home. At the same time, her always aloof boss actually showed up at the blind date arranged by her parents in a cheerful manner... When the true meaning of childhood sweethearts met, the seventh star from the old time shined love into Zhu Liansheng's dull girl's heart...
