A thunderous storm roars and rages, drenching the night in icy rain. A chill wind howls, thrashing the branches of the trees and sending a shiver down every spine, and yet it does nothing to dispel the unsettling Spirit Ominous Fog...

A distant Nightbloom Cloud of Bats rises shrieking from the bushes, but as they swoop past the hidden lab constructed in the depths of a dilapidated building, there is a flash of electricity - and they are transformed into a swarm of bizarre Black Electro Bats!

What strange and mysterious science is afoot during this terrifying storm....?