"Queen of the Blue World" by Basil Wells is a science fiction novel written in the early 20th century. The story follows the adventurous journey of Martians as they search for the missing ship, the "Indra", which has crashed on Earth, known in Martian as Soora. The themes revolve around exploration, survival, and the intertwining fates of different species amid a colorful, alien landscape filled with unique life forms. The plot centers on Rurak Dun, a Martian officer, who is sent to find Prince Hudar Kel, the heir to the Martian throne, missing for seventeen years. Upon landing in the strange swamplands of Earth, Rurak encounters the beautiful Nitha Kel, daughter of the prince, as well as various dangerous creatures, including the savage Yzaps and the grotesque thuftars. Nitha reveals that her father is alive but under threat from a rival faction led by Jokar Ged. As Rurak and Nitha work to fend off Jokar’s forces and reunite with her father, they navigate the challenges of this hostile world. The story culminates in their efforts to return to Mars just in time for the ascension of the new emperor, amid constant peril and adventure in their quest. (This is an automatically generated summary.)