FBI agent Steven Grant (Bokeem Woodbine) is given the very delicate assignment of tracking down a vampire who threatens to expose a secret government operative which would integrate vampires into normal society. His partner Aaron Grey, a "good" vampire, aids Grant in his search, which leads to the lair of Lucy (Bai Ling), a vampiress. The usually distrustful Grant is taken in by Lucy's charms, and he begins to wonder which side he's working for. This sexy thriller offers unique twists on the classic vampire and buddy cop genres.