Scholar SHUI (Ng Cheuk Hai, Ron) and LEUNG (Wu, Myolie) each picks up one half of a matching jade at a lantern fair. However, they do not meet each other. At the same fair, SHUI saves the Prime Minister's daughter NGUN (Yip, Michelle) from some kidnappers. The Prime Minister's wife promises to marry NGUN to him in order to thank him. Nevertheless, she denies her promises later and demands him to become a royal scholar before he can marry NGUN. He moves into the West Chamber, their gueshouse, and studies hard.

The Emperor CHUNG (Kenneth Ma) meets NGUN when he is travelling incognito under the name of BUN. He is shocked by her beauty. They get on very well. However, NGUN is deterred to develop further in their relationship by her engagement with SHUI.

Apart from this love trangle, there is one more girl LEUNG, who loves SHUI at the first sight. She and NGUN are best friends. She has to hide her feelings for SHUI although she cares a lot about NGUN's decision in choosing between BUN and SHUI. Meanwhile, the imperial court sets out a search for a Tibetan princess who is engaged to the emperor and has gone missing. The four young persons are ar a loss when the news comes...