Embark on an underground adventure in the game "テスカトラ," available for iPhone users. Unravel a captivating storyline set in a world plagued by abnormal weather phenomena and natural disasters. Dive deep into the depths of the earth as part of the Mikawa Ancient Ruins Excavation Team and stumble upon a mysterious device that summons a dragon named Guuni.

Guuni reveals that the weakening magnetic field of the Earth is causing the current chaos and hints at a catastrophic pole shift. The solution lies in activating the Earth's magnetic field maintenance device with the wisdom of Mu. It's up to the adventurers gathered here to save the Earth in this thrilling mission!