An irregular rock shook and suddenly fell inward, rolling down a sloping ramp into the darkness with a few crackling sounds. A faint golden light appeared behind the rocks that had been pushed down. Zero drilled its way in. With a single step, its entire body dropped down. He did not panic, but instead activated his ability to hold his breath. An invisible force field wrapped around his entire body, and under the effects of the reverse gravity field, he was able to stop himself from falling ...