Yul, the manager of the interdimensional dump truck office, accidentally kills an innocent person named Kwon Yoo-jun. In order to make amends, Yul enters a romance fantasy novel where Yoo-jun is the villainess and tries to send her back to her original world. However, due to various complications, Yul becomes trapped in the novel. With the office staff scattered and no knowledge of the novel's plot, Yul desperately searches for a way out. But, Yoo-jun, who is now pretending to be a noble lady in the new world, causes Yul a headache.