Aubrey, an orphaned young gentleman in possession of a large fortune, arrives in London for the season where he meets the mysterious Lord Ruthven. Aubrey befriends Lord Ruthven and upon discovering that Ruthven is planning a trip to Europe, decides to take his grand tour at the same time and travel with him. The longer Aubrey is with Ruthven the more he discovers about him. He decides to distance himself from Ruthven; but is he already too late to save all that he holds dear from the thirst of the vampire?