During their summer break from school, friends Biggi, Patrick and Luk find a mysterious key which spurs their interest. The key, as they find out, is said to open the gate to the mythical Moonshine Palace, which is supposed to be hidden in the Mountain of the 1000 Dragons in China. Using their combined wits, the children are able to embark on the long trip to Peking – the beginning of a grand and dangerous adventure, since the demonic Q, leader of the secret Blake Snake Order, and her son Munroe are also looking for the key in order to gain access to the legendary palace. According to legend, not only immeasurable treasures are to be found in the palace, but also a magic potion granting eternal life. And ruthless Q is willing to use all means to get it.