When shocking news reaches the History Keepers' headquarters, Jake Djones is sent head-first into a new adventure. The time-travelling agents voyage from Shakespeare's England to Imperial China in pursuit of their most villainous foe yet, Xi Xiang, whose aim is to destroy trade links between east and west and throw the world into war. Jake, Nathan and Topaz must join forces with international agents in a race against the clock to stop him. And at the heart of the battle lies the key to a long-lost family member - will Jake find his brother after all this time? The past is in danger - only Jake Djones can save it!