On her way back from Australia, Dorothy visits her cousin, Zeb, in California. They are soon swallowed up by an earthquake, along with Zeb's horse Jim and Dorothy's cat Eureka. The group soon meets up with the Wizard and all travel underground back to Oz. A Faithful Record of Their Amazing Adventures in an Underground World; and How with the Aid of Their Friends Zeb Hugson, Eureka the Kitten, and Jim the Cab-Horse, They Finally Reached the Wonderful Land of Oz