A Hunt Ball is an traditional event which is held so that the host may select a wife. According to Vlad it is a 'big fancy party with ballroom dancers'. At midnight the vampires start hunting peasants to feast on.
When Count Dracula hosted a Hunt Ball his son managed to persuade him to invite a few peasants to feast on. He decided that they would let them loose at midnight. Count Dracula did not end up choosing a wife because he was too preoccupied with Magda Westenra. At midnight a large clock appeared in the floor which the vampires gathered around. The Branaughs managed to get away when Robin and Ingrid distracted them.