From the back cover:
"In 1848 the Franklin Expedition vanished in the ice searching for the Northwest Passage. Eighty years later, you and your associates travel to Northern Canada to research the disaster - and find yourselves launched in a globe-spanning race to defeat the terrible god of the icy wastes. Hundreds of hours of research have gone into creating the most realistic 1920s campaign ever. Japanese gangsters, Iraqi archaeological digs, secret airships, and a legend older than humanity serve to challenge even the most experienced of CoC players. Walker in the Wastes is a huge campaign of discovery and horror, and is suggested for experienced Keepers."