Lu Yu, a Ming Dynasty Jinyiwei, is struck by lightning and transported to the modern world while saving Princess Lin'an. Mistakenly believing she’s also crossed over, he embarks on a mission to rescue her from a criminal gang. As Lu Yu navigates this challenge, he discovers the girl before him isn't the princess, but he remains determined to save her, leading to a thrilling rescue with the help of Zhu Yan and the police.