Step into the intriguing realm of urban exploration, a global subculture of daring adventurers who venture beneath city surfaces and enter deserted structures, boldly seeking hidden gems of contemporary society. Documentary filmmaker Melody Gilbert tracks the journeys of Max Action, Slim Jim, Katwoman, and Turobzutek as they penetrate decrepit mental hospitals, governmental facilities, neglected tourist spots, sewers, drains, and even the off-limits Catacombs of Paris. Many of these explorers carry nothing but a camera, frequently capturing breathtakingly stunning images.