Society is plunged into chaos by the appearance of mysterious jellyfish that swarm onto beaches glowing beautifully at night. A single touch from their tentacles transforms humans and animals alike into jellyfish. Curiously, many people yearn for the sightless, soundless existence of these drifting sea creatures. Soo, who hides away at home, desires only to escape life. When driven to his limit, he flees toward ‘Manbok Inn,’ rumored to offer a new beginning. There, after six years of isolation, Soo faces people once again and stands at a crossroads. Will he live as a human or a jellyfish?