The Great Toonolian Marshes -- one of the most feared places in Barsoom with 1800 miles of marsh land infested with exotic and dangerous creatures. Dejah Thoris, along with her new pilot Kantos Kan, ventures into this foreboding region on an expeditionary mission to find desperately needed minerals. While exploring, Dejah is possessed by "The Boora Witch," an ancient, demonic creature. Unknown to anyone, The Witch takes control of Dejah and starts...