After a gold creature causes a cave-in which traps a miner, the team must travel deep underground in an experimental Mole device that Ito invented. However, soon the rescuers need rescuing when they confront the monster Goldon.
After a gold creature causes a cave-in which traps a miner, the team must travel deep underground in an experimental Mole device that Ito invented. However, soon the rescuers need rescuing when they confront the monster Goldon.
