12 friends go on a trip together to kick off their annual group activity week as usual. However, things become complicated as weird messages start to arise.
Everything is going well for the group of nine friends. No arguing. No panicking. Everyone friends. And everyone is alive. until one day, unexpectedly, one of them dies. They all deny that they killed their friend but he has no enemies or people that he doesn't like. Police start to suspect that someone in the group is lying so they set up cameras without the group knowing. And they find something unlooked for. Who's the killer? Is there even a killer at all?