H21 has spent her entire life behind white walls, hundreds of metres below the ground. She lives in one of the many so-called"Camps", which were built as safe respites after a deadly nuclear war rendered life on the surface of the Earth impossible. But is life below the surface what it seems to be? The truth will be revealed, humanity's darkest sin unveiled. Would H21 want to find the answer to her question? She has always being different. It's only a matter of whether people care.