You're likely referring to the 2004 comedy film "Van Helsing" starring Hugh Jackman, but there's also another movie called "Dracula" or "Horror of Dracula" (1958) and a more recent one "Hotel Transylvania" (2012) animated movie.
It sounds like you're looking for a description or summary related to the first movie in a series set in Transylvania. The most likely candidate is . transylvania movie 1