Every episode drops you into a crime scene where the monster is already gone, and Banba has to reverse-engineer what it was from the wreckage. The show operates like a horror procedural where the real threat isn't dying to the creature, it's realizing these things didn't start appearing randomly. Short runtime means each episode is pure tension with no filler, thirteen episodes of mounting dread that something systemic is hunting humanity, and Banba is the only one asking the right questions.
Grotesque creatures emerge without warning, dragging ordinary people into nightmare scenarios they can't escape. No pattern explains the attacks. No defense seems effective. Sousuke Banba, a reclusive scientist obsessed with unexplained phenomena, becomes convinced these incidents connect to something deeper, something forgotten. A single word haunts his investigation: Kagewani. As Banba pursues the truth, he uncovers fragments of a larger conspiracy. Each monster encounter births more questions than answers. Victims describe impossible things. The attacks intensify. The world teeters on the edge of understanding that reality contains corners humanity never wanted to explore. This is panic wrapped in mystery, where survival depends on decoding an enemy that operates by rules we've yet to learn. Banba races against time and sanity itself, knowing that ignorance might have been safer than the truth he's chasing. The creatures keep coming, and the questions keep multiplying.