Underworld: Evolution is a 2006 action/horror film, directed by Len Wiseman. It is the second film in the Underworld series, following Underworld in 2003. Evolution continues the conflict between vampires and Lycans, also highlighting the beginnings of the feud.
Underworld Evolution is an immediate follow-up to Underworld (2003). Therefore, the events of Evolution take place during the same night of the first film's finale, and the next few days after.