Yifan Shen is a Chinese girl living in England with her mother and her English step-father. When she falls asleep one day and meets her older self, Vicky, an adventure starts that propels Yifan and her family into kidnap, danger and death.

In her own world Vicky and her mother manage to come to terms with their new-found status as the Queen and Princess of China; but when Vicky enters the tomb of her ancestor the First Emperor of China, only Yifan can save her.