Sixteen years old Deniz is accidentally hit by a teammate in a high school basketball match. He finds himself in Istanbul Valide Atik Training and Research Hospital's ER after he has a concussion. Doctors have difficulty in diagnosing Deniz who has double vision and night terrors. Meanwhile, Zeynep who looks for a new case to study on learns about Deniz and takes the case to Ates Hekimoglu. As soon as he hears about night terrors, he volunteers to take the case to everyone's surprise. As all these happen, there have also been some changes in Orhan's life. Ates doesn't remain indifferent to what his only friend, Orhan, has been going through. He is determined to solve the puzzle in Orhan's life too. While Hekimoglu examines Deniz's disease evaluating all kinds of clues, he uses extraordinary methods. As he gets out of the line, he has conflicts with both Ipek and the boy's parents.