Furio Almirante defeats the Leopard and finds a secret number in his documents containing: statements about the activity of a group of dangerous people who plan unrests around the world. Furio leaves without hesitation to Hong Kong, where Palmer is found, one of the main agents of the association but he was notified by a Leopard messenger and has already prepared a counterattack plan.
In the small village of Thaona, lost in the mountains of Mongolia, Ilona, the attractive daughter of a scientist, meets her fiancé Allan, who she met eight months earlier in San Francisco where the girl had finished her studies. After the introduction to her father, the two young people take a tour of the village curious to know its customs.
