Upon hearing the legend of the treasure known as the Valkiry, treasure hunters Axel Sonics and Ruka Hetfield embark on an adventurous quest to find the legendary stone. However, unknown to Axel and Ruka at the start, there is also a terrorist organization known as the Pumpkin Heads searching for the Valkiry, determined to use the stone for World Domination. Can Axel and Ruka beat the Pumpkin Heads to the Valkiry and save the world from an Age of Darkness?