When it takes more courage to live than to die, twelve teenagers come to the abandoned hospital and vote what they thought was 12 to 0. after passing, they can commit suicide collectively, only to find out that there is one more body in the room, and the murderer and the infiltrator who tried to break the contract must be found. The plot unfolds with Neo-Benji reasoning and tit-for-tat confrontation in the style of "Twelve angry Men" at the same time. It turns out that I hate the world again, and my heart is eager for others to listen to their own stories. Every one is suspicious, every one is persuaded at any time, and the ending demonstrates the most convincing reversal. The director of "Youth of the 20th Century" (2008-09) and "Adult style of Love" (2015) skillfully touches the taboo of juvenile suicide and puts him to death as if he had made up a plan. in the abyss of despair, a hug can save a soul.