It's been 60 years since the disaster. A near total collapse of society as we knew it. Now everything is back to normal, well except the interdimensional creatures that come through to our reality every now and then.
One unfortunate night gas station attendant Sato Masuyo had come into contact with one of these creatures known as "Showerhead" who kills her coworkers (including her crush). With her life changed upside down she joins investigators Zhen and Joseph in the hope of finding him and bringing him to justice...
Or maybe just killing him in revenge with no remorse.
Who knows, nothing matters anymore.