The story begins with Riko and Reg's meeting in the first episode of season one. This marks the start of their great adventure, and together they travel to Seeker Camp in the second layer of the Abyss. Experience the awesome power of the Curse of the Abyss, as well as the astonishing, legendary entities known as primeval creatures. Prepare to glimpse the world of Riko and her friends. Experience a Brand-New Story Another story takes place many days after Riko and Reg depart for the Abyss. The world's sole remaining, unconquered chasm, the Abyss, is the stage where many adventures are born...and disappear. Those who appear in these stories are mesmerized by the power of the Abyss and aim for the bottom of the netherworld. The story about to be told is of the adventures of a nameless Cave Raider in the Abyss. Features: Relive the world of the Abyss in this 3D Action RPG! Original story supervised by Akihito Tsukushi! The anime cast reprise their roles for fully voiced event scenes!