Doctor's Royal Destiny

A doctor travels back in time to an ancient royal court after examining a mystical jade pendant. Mistaken for an assassin, he proves his worth by curing a princess of tetanus with modern medicine. He wins her heart, defeats a rival suitor through wit, and exposes a treason conspiracy. When barbarians invade, he uses walkie-talkies as a military strategist to save the kingdom. Ultimately, he returns to the modern world, wondering if it was all a dream.