Underworld is not a film which I can give too many details on because here, logic is far less than my recent horror review (Vampire).
It`s all about a werewolf-hunting vampire who uncovers a conspiracy and tries to use even more violence as she tries to figure out what her mortal enemies want with a human.
Vampire Selene (KATE BECKINSALE) is a death dealer. Her job or mission as a vampire is to find Lycans. That group, as I find are mostly known as the werewolves. Her mission is to also kill them because eversince, the two groups of creatures have been battling for centuries for their land.
Naturally, she reports this to her vampire leader, Kraven (SHANE BROLLY), who thinks she`s thinking nonsense. Anyway, in some ways there are controversies between them. And no one seems to believe her theory that the great Lycan leader, Lucian (MICHAEL SHEEN), is still alive.