The Wyrm is an integral part of reality. The Wyrm belongs to a family of beings called The Triat. Recently, The Weaver has gone mad with order and has become a victim of its own order. The 13 Tribes of Garou are the only force that keeps The Wyrm at bay. In the game description you said that the main character Ryan belonged to a tribe.
All Werewolves can trace their lineage back before man stood on two feet.
Different tribes of Were wolves have different abilities and traits. Ryan's tribe has long since been corrupted by The Wyrm. Once they were the White Howlers. So great was their sacrifice that they gave their souls to protect the world from The Wyrm's corruption. Now they are no more, and Ryan will never know what it is like to be a White Howler.