From Ryzom Wiki
Two groups as powerful and mysterious as one another seek to control the destiny of Atys. Both possess unique powers, both claim to be the true guardians of the planet, both come to the aid of homins as long as they obey their rules, both are secretive about their origins and perhaps even their true intentions. For centuries now, they have followed different paths, observing one another without confrontation. Their protection is vital during your journey on Atys whereas their anger could prove deadly.
Choose carefully then, the side you wish to join.