The story begins when strange rumblings, like earthquakes, accuring deep underground. Several Miners are sent by a random Government to investigate. The Miners discover crystals underground, and monsters.They realize that the monsters eat the crystals and cause the rumblings.
The Miners build vehicles to stop the monsters, and collect all the energy crystals below, but soon wake the King of the monsters. The King tries to stop them, but breaks the cave floor, by pounding one of the vehicle`s drills into the ground. When the ground colapses, some miners are stuck above, some not.
Soon, the Miners realize they are not alone. Monsters, now made of lava are also eating crystals.The Miners soon are able to return to their base and build 4 new vehicles and a jail. They use Liquid Nitrogen to freeze monsters and capture them. Soon they defeat all the Lava Monsters and capture their king.