SLEEP follows newlyweds Hyun-su (LEE Sun-kyun, PARASITE) and Soo-jin (JUNG Yu-mi), whose domestic bliss is disrupted when Hyun-su begins speaking in his sleep, ominously stating, “Someone’s inside.”  From that night on, whenever he falls asleep, Hyun-su transforms into someone else, with no recollection of what happened the night before. Overwhelmed with anxiety that he may hurt himself or their young family, Soo-jin can barely sleep because of this irrational fear. Despite treatment, Hyun-su’s sleepwalking only intensifies, and Soo-jin begins to feel that her unborn child may be in danger.

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