Four teenagers have a private party in an abandoned, secret tower located deep in the woods. Somehow, they get trapped and are unable to find a way out of the spooky place. Three of them die. The only surviving witness, Eva, somehow manages to break out of the unwanted prison. She is psychologically damaged and seems to be under complete shock. The SOKO team struggles to reveal the truth and it takes time until they find out the real reasons why the three teenagers had to die whereas Eva was able to survive…
