After a one-night affair with Su Luoxue, Gu Tingye is forced to leave the country. He loses his memory in a car accident, and five years later, returns to investigate the events of that year, disguising himself as a beggar. Unexpectedly, he ends up having a flash marriage with Su Luoxue. After their marriage, Su Luoxue is bullied by Gu Yan and others, but Gu Tingye fiercely protects his wife, even though he repeatedly exposes his true identity. Their relationship deepens, and the truth behind the events from years ago gradually comes to light.