Airi Mita

Kei (Leo Koo) has just wrapped up a big contract for his company (though it's never clear what kind of work he does). He decides to take a well deserved vacation, to go and visit his girlfriend June (Anita Chan) in Japan. He hasn't seen her in a while.

Kuroi Misa, a girl with Satanic powers, mysteriously appears in various high schools. Carrying a dagger and a heavy leather bag, she uses her powers to eliminate the evil forces that thrive on deadly sins of the human race. Her ultimate aim is to cleanse the earth and rebuild her broken family.