Inspector Yuen Kam Cheong of the Criminal Intelligence Bureau accidentally kills his girlfriend, Yeung Jik Suet during a criminal chase. Devastated and filled with guilt by her death, Yuen’s soul travels back in time and returns to the medieval Song Dynasty of ancient China, where he takes the identity of the famous Justice Pao, a magistrate of the Kaifeng Prefecture. He is shocked when he meets Hon Sheung Sheung, a woman who physically resembles Yeung. Pao investigates Hon’s background and discovers that she is a princess. But history repeats itself...