A mysterious man looks for a missing girl, and fish start falling from the sky.
Little do people know how connected these two happenings happen to be!

Awakened by troubled dreams, Minami goes for a midnight walk. However, the night seems much longer than usual! Will she ever get to see the light of day?

Under the surface of everyday life, an illness ravages all of humankind, turning everyday people into wild, mindless beasts. To counter this, Venators take to the streets and clean out the vermin under the cover of night. Kafka Ikari - a young man who can't remember his past - is one of many of these hunters. However, after a near-death experience, Kafka finds himself pulled into a conspiracy deeply rooted in his lost memories, one that could forever shift the fate of humanity itself.

In a hyper-industrialised future, Lilac Akita lives her days in a hospital, inflicted by an illness that has rendered her legs useless. However, things change when an eccentric scientist approaches her with the opportunity to pilot a new type of weapon: the Iron Lung.