Three best friends head to Blue Lake for a relaxing summer vacation, eager to escape city life. A strange red meteor crashes into the lake overnight, bringing an unknown lethal virus that poisons all water sources. Communications vanish, the town falls silent, and mutated creatures lurk everywhere, hunting for prey. Trapped in the disaster zone, the trio abandons their getaway plan and embarks on a brutal cross-city hike, confronting endless horrors in a world on the brink of collapse.