Undercity Pulse — Sewer Canal Speeder Flight

Ten-second cyberpunk flight film, 16:9. Skim inches above black canal water in the city's underbelly, the camera racing beneath a ceiling of pipes, cables, and dripping conduits. 0-3 seconds: the speeder drops into the canal run, bioluminescent algae slicking the walls green, maintenance bots scuttling across the pipe ceiling overhead; the black water mirrors the green glow in rippling streaks. 3-7 seconds: the speeder threads a half-submerged arch, water sheeting off the hull, and passes a hidden dock where smugglers load crates by lantern light, their faces turning to watch; a maintenance bot's single eye-light tracks the speeder from the pipe ceiling as it banks hard around a support column wreathed in cables. 7-10 seconds: the canal opens into a vast cistern where a waterfall of runoff pours from a shattered grate in the city above in a roaring curtain, mist filling the air and rainbowing faintly in the algae glow; the speeder climbs the waterfall's spray and bursts toward a distant service tunnel. Craft: the canal has black oily water, algae-green walls beaded with condensation, a ceiling of pipes and dripping conduits, the half-submerged arch, the smugglers' dock with crates and lanterns, and the cistern's runoff waterfall. Camera: fast low tracking motion, threading and banking, ending on a climb; aggressive but smooth. Lighting: sickly greens and rust oranges in near-darkness, the algae glowing, lantern light at the dock. Atmosphere: grimy, secret, alive. Style: cyberpunk realism, fine grain, 24fps.