HOLLOW BELL

Hollowbell Academy was a school that was abandoned after an inexplicable event. Years later, the school's old siren rings again on its own and a dense fog covers the entire region.

Each time the siren goes off, the school changes. Hallways that didn't exist appear, doors lead to different places, and creatures begin to emerge from the darkness.

Nobody knows who's setting off the siren.

But one thing is certain:

When the siren sounds, don't stand in the corridor.