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Workers on the underground Tokyo Geo-City Project uncover a series of limestone caverns. However, one of the workers is a member of the Earth Defense Army, militant anti-Project Babylon terrorist group. He has set off a bomb and threatens to set off more in an aim to destroy the project. The SV2 are called in to help. Noa along with Kanuka who has anti-terrorist and bomb disposal training, set off in their Labors to defuse the bombs and apprehend the criminal...