A spin-off set within the fantasy universe of The Elder Scrolls, Battlespire casts the player as an apprentice striving to earn a place among the Imperial battlemages. The Battlespire itself is a legendary training academy, a fortress adrift in the daedric realms where would-be war-mages are put through their final trials. But when the player arrives to complete their initiation, they find the place overrun: the demonic Daedric Prince Mehrunes Dagon has seized the Battlespire, slaughtering its instructors and students and turning it into a staging ground for an invasion of the mortal world of Tamriel. Stranded and alone, the apprentice must fight through the corrupted halls of the Battlespire and venture into the twisted planes of Oblivion beyond. Battling monstrous foes, solving arcane puzzles, and uncovering the scope of Dagon's scheme, the lone survivor becomes the last hope of stopping the Daedric Prince before his armies can spill through into Tamriel and lay waste to the realm.