When Jonathan's parents die in an accident he moves back to his childhood home to take care of his little sister Rebecca. Jonathan starts isolating himself in his new routine and quickly looses touch with the rest of the world. When Rebecca expresses her concerns for him he decides to invite his old group of friends over to show her that he's okay. What should have been a nice dinner ends in a murder and Jonathan decides to hide everything from Rebecca. He tries to keep living as usual but quickly loses touch with reality and starts believing Rebecca is in danger. He can't tell what is real anymore and everyone seems to want to hurt his little sister. The further his delusions go the more he starts to doubt whether or not the real threat against Rebecca is the rest of the world or himself.