Ghosts haunt the world's abandoned cities while crimson hellcats roam the crumbling landscape. A young team of phantom hunters, siblings Mid and Kanta, must eliminate these unwelcome creatures. It's a dangerous battle and think they're winning until one night during Hallow Hour--midnight--the most powerful demons emerge. They meet a family, headed by Tai, who may hold the secret to destroying the phantoms forever. Suspicious of the hunters but left with no options, they join the travelers. Will Tai share her demon-killing secret? Or will her own family's own dark secret destroy her first?