During the late reign of the Wanli Emperor of the Ming Dynasty, the crown prince (Bob Cheung) had frequent conflicts with the eunuch faction, led by Timothy Cheng. Timothy secretly sends Eastern Depot officials after the crown princess (Grace Wong). Under the protection of Edwin Siu, Raymond Cho and eunuch Matthew Ho, the crown princess flees to an isolated, hazy forest. Amidst the chaos, the three of them and the crown princess get lost. When they emerge from the fog, they discover that they have traveled 400 years and arrived in the 21st century.