Yakumo and Pai return to Hong Kong when the Statue of Humanity turns up in the possession of Steve Long, another Monster Buster, Inc colleague. Before they can reach it, Steve and the statue are kidnapped. Yakumo, Pai, Ling Ling, and Steve's sister Meixing attempt a rescue. But it's all a trap to catch Pai, the statue, and Meixing in a human sacrifice to release the dark spirit of Kaiyan Wang!