TV Yarou Nanaana: Wakuwaku Doukutsu Land

The Banakawa Family, once wealthy in the Edo period, hid their gold in a cave, but the location remains unknown even to their surviving relatives. To save their jobs, a TV shooting crew develops a plan to explore this cave, searching for the treasure that has eluded major networks with substantial budgets. The crew's program, a large-scale survival effort, will document their expedition into the underground world.