Yann Prigent, a former soldier, meets the strange Doctor Kidji who is hunting down a mysterious secret in North America. The two, accompanied by several adventurers united in the "extraordinary league", set out in search of an ancient city, Crystal, lost in the depths of the arctic desert of the Far North in Quebec. The city attracts all the more covetousness as the diamonds which abound its basement are reputed to have unusual powers. However, many dangers await these men on their journey. The secret society that runs Crystal isn't ready to share the ice secret. How will Prigent and Kidji overcome this challenge? Will they come back from their expedition? With this novel, we find all the magic and the exoticism of the Arctic, a territory both superb and disturbing, which serves as the backdrop to a story mixing adventure, fantasy, science fiction and romance.

* * * Ludovic MARIN is a researcher, an investor and an entrepreneur.