At the new house, Jin-seok starts noticing some strange random noises and shadows. Although he voices his concerns to his family, they ignore him.

On a rainy night, Jin-seok witnesses the abduction of Yoo-seok. Nineteen days passes and the older brother returns home. However, Yoo-seok seems to have no recollection of what happened. The family believes that Yoo-seok suppressed his memories of that day.

Jin-seok notices small changes in Yoo-seok’s behaviour, which leads him to follow his older brother. As he was following Yoo-seok, Jin-seok is stopped by two thugs. They chase him around and Jin-seok has no option but to run. When Jin-seok thought he was out of danger, his brother appears from behind and sedates him.

The next day, Jin-seok finds himself sitting at the same place before he started following Yoo-seok. Still in shock, he locks himself in the bathroom when he sees his older brother and refuses to get out. Yoo-seok tries to convince Jin-seok that it was not real, and blames it on Jin-seok for not taking his medication.

Still unconvinced about Yoo-seok’s explanation, Jin-seok reaches to his mother and tells her what happened. At night, Jin-seok overhears her talking on the phone. Now, he’s convinced that his parents aren’t really his family. Therefore, Jin-seok runs away and rushes to the nearest police station. Then, he proceeds to explain to the police officers what happened. Jin-seok tells the police that people pretended to be his family in order to hold him captive, which leave the officers quite puzzled.
...