The adventures of Trot and Cap'n Bill take them to Oz where they help solve the problem of Pom, whose truelove's heart has been turned to ice by witches.
When all the inhabitants of Pingaree are kidnapped by the mongrel hordes of twin island kingdoms, Prince Inga and his friend King Rinkitink decide to go to the rescue.
When Princess Ozma and all the magic of the Land of Oz are mysteriously stolen away, Dorothy and the other residents of Oz are determined to find their missing ruler and the thief responsible for her disappearance.
Six tales present further the adventures of Dorothy and Toto, Ozma, Tiktok, Jack Pumpkinhead, the Tin Woodman, and other characters from the land of Oz.
Trot and her uncle, Cap'n Bill, encounter unusual experiences with mermaids, sea-serpents, and other strange creatures while journeying in the depths of the sea.
When a storm blows Dorothy to the land of Ev where lunches grow on trees, she meets the Scarecrow, the Tin Woodman, the Cowardly Lion, and Princess Ozma, and together they set out to free the Queen of Ev and her ten children.
Dorothy tries to rescue the Tin Woodman and Scarecrow from the giantess who has changed them into a tin owl and a teddy bear and is using them for playthings.
The Sorceress and Wizard of Oz attempt to save Princess Ozma and Dorothy from the dangers which threaten them when they try to bring peace to two warring tribes.