"Thuvia, Maid of Mars" is a science fiction novel written by Edgar Rice Burroughs, originally published in 1920. It is the fourth book in Burroughs' Barsoom series, also known as the John Carter of Mars series, which follows the adventures of John Carter, a Confederate soldier mysteriously transported to the planet Mars.

In "Thuvia, Maid of Mars," the focus shifts from John Carter to other characters on the planet. The central character is Carthoris, the son of John Carter and Dejah Thoris, who finds himself entangled in a complex plot involving love, honor, and interplanetary conflict.

The story begins with Carthoris, who falls in love with Thuvia, the princess of Ptarth. However, Thuvia is kidnapped by Astok, prince of Dusar, who also desires her hand in marriage. Carthoris embarks on a perilous journey across the Martian landscape to rescue Thuvia and restore her honor.

As Carthoris searches for Thuvia, he encounters various other characters and faces numerous challenges, including battles with fierce Martian creatures and rival factions vying for power. Along the way, he forms alliances and confronts enemies, all while navigating the intricate politics and social structures of Barsoom (Mars).

"Thuvia, Maid of Mars" is renowned for its thrilling adventure, imaginative world-building, and vivid descriptions of Martian landscapes and cultures. Burroughs' prose is fast-paced and engaging, drawing readers into the fantastical world of Barsoom.

The novel also explores themes such as honor, duty, and the nature of heroism. Through the character of Carthoris, Burroughs presents a classic hero who must overcome obstacles and face his fears to achieve his goals.

Overall, "Thuvia, Maid of Mars" is a classic example of pulp science fiction, beloved by fans of the genre for its swashbuckling action, exotic settings, and timeless sense of adventure.