盧卡斯和克洛伊對解謎遊戲有極大的熱情，他們參加了一個充滿謎團的逃脫遊戲「妄想症」。在滿懷信心地解開一道道謎題後，兩人跟隨線索來到了最後關卡的所在地—一座廢棄的精神病院。在那裡還有另外四名玩家等著他們，隨著遊戲進行，殺戮也跟著展開，參賽者們很快就明白，他們之中只有一個能活著走出去……。

　　The story of Antoine Leiris, who lost his beloved wife Hélène in the terrorist attack on the Paris "Bataclan". In a moving Facebook post, he counters the assassins' hatred with his love for his almost three-year-old son. And yet he seems to lose his footing in his grief.