A zoo monkey in Sichuan travels to NYC to rescue his human friend from a trio of nefarious kidnappers, only to realize the Demon King is behind it all.

Staz is a vampire from the surreal "Demon World", and Fuyumi, an ordinary girl, accidentally wanders into the Demon World through a portal. Subsequently after meeting each other, Fuyumi is killed by a carnivorous plant and turned into a ghost, causing Staz to take responsibility and pledge to help bring her back to life.

After teenager Ichigo Kurosaki acquires superpowers from wounded soul reaper Rukia Kuchiki, the two of them join forces to round up lost souls.