Leibert (Hugh Jackman) is a down-and-out noble duke in the 19th century. At a blind date party arranged by his family, he accidentally broke into the time tunnel in order to track down a stranger, the mad scientist Stewart, and came to the 21st century more than 100 years later. Stewart's accidental hospitalization made the duke face a strange environment with difficulty. By chance, he met Stewart's ex-girlfriend Kate (Meg Ryan) - an ambitious, independent and smart advertising woman. A series of things attracted the two to each other and wrote a romantic love song across time and space... However, the emotions that travel through time and space are destined to be not smooth sailing. In order to adapt to the development of history, Stewart, who was discharged from the hospital, had to send Leibert back to his era. Leibert and Kate's newly begun relationship faced the crisis of separation in time and space. Is the two destined to be together or a momentary encounter? Can the two be together across the barriers of time and space?