Donghyuck has a crush on the boy who lives across the street. Their apartment windows face each other. Donghyuck looks across every night, he sees the boy laugh, cook, clean, play music. He sees the boy in school sometimes. Mark Lee. Mark's life seemed extraordinary. He could get anything within a snap of his fingers. Donghyuck would never gather the courage to do anything other than look through his window to the one across the street. Mark has never looked back. Until one day he does. Donghyuck has a lot to learn if he thinks Mark is perfect. Mark is regular. Just like everybody else.