Synopsis

Sung-hoon is unexpectedly drawn into a space by a mysterious book, which reveals that he's being tested for possession. The test takes the form of an illusionary environment where familiar faces appear to torment and manipulate him into violent actions. Sung-hoon quickly understands that this trial is designed to break his will, forcing him to choose between accepting the illusion's reality and preserving himself; leading to him shockingly killing the familiar faces in the illusion.