Mortimer is brought to the camp of General Li Hsi, the Chinese warlord, where he is reunited with a seriously injured Nasir. The professor was kidnapped in order to recover the archaeological proof of the general's imperial lineage, but also to repair the Red Wing, a formidable combat aircraft Olrik unwittingly delivered. While Blake moves heaven and earth to find him and protect Hong Kong, Mortimer escapes to go in search of the only thing that can save Nasir: a legendary pearl ...