 In the year 2000, on a calm day in Tokyo, mysterious blocks of different colors start popping out of the ground. Nobody knows how they came. Pepplexed and annoyed at this freak event, the Tokyoites call on Susumu Hori, aka "Mr. Driller," a young driller and block-buster, to dig deep underground to find out the cause of the mysterious blocks. Will Susumu do it...or will he fail?