When a solider in the Middle East gets wounded in the line of duty, he is teleported to the planet Barsoom, where he faces hostile aliens and fights for his survival.

In this present day prequel, the robot invaders attack the Earth, forcing a small band of humans to seek refuge below the surface of the planet.

When an ancient warlord summons a mythological beast, a young hero must complete a series of quests to awaken the dragon that will defeat the monster.