Deep in the forest, a man and woman have been brutally attacked in a cabin and left to die. Arriving too late, Kang (Gam Woo-Sung) chases the killer only to be hit by a speeding car. Barely surviving surgery, he now finds himself a prime suspect in the double murder case. While a police investigation sets out to confirm his story, he cannot shake the feeling that there are strange gaps in his memory regarding the night in question and the killer's identity. Piecing together the fragments of a bizarre dream, his own nightmares may hold the key to the truth.