In this psychological thriller directed by Nick Hamm, a group of British private school students, including Thora Birch and Keira Knightley, decide to explore an abandoned underground bunker. What begins as a thrilling adventure quickly turns into a harrowing ordeal as they find themselves trapped with no way out. The film delves into themes of trust, fear, and the darker aspects of human nature. While it did not receive any major awards, it is notable for its intense atmosphere and strong performances. For those interested, the movie can be viewed for free on 123Movies / Movies123.