Big Dig! The Legend of Oedo's Buried Treasure

Synopsis

While doing a big cleanup of the archives, Burton and the others happen upon an old treasure map of Oedo. With that, the group heads for Oedo to hunt for the fortune. Arriving at the mouth of the cave drawn on the map, they find an old man collapsed on the ground. The old man was Kansuke, a buried-treasure hunter. According to Kansuke, that cave is the "man-eating cave," and his own companions vanished inside it. Even so, the group heads into the cave. And then, one by one, their companions start disappearing…