Fifteen years ago, mysterious rainclouds formed over the city of Sundusk.With them came mysterious, deadly creatures who attack anything with a pulse.
Now fifteen years old herself, bird nerd and Aeroglider Yuni Azuren teams up
with her newly sentient cat plush, Trick, to figure out what's really going on here.
But before she can do that, she discovers something even stranger;
Her best friend, Zero, who's supposed to be dead.