Vampire hunter Edgar Frog is destitute and nearly friendless, when the beautiful vampire-romance novelist Gwen Lieber offers him a little chance to go on the vampire hunt of a lifetime and save her brother out of a army of toddlers using a brand new drug called the Thirst, which is an assortment of Ecstasy and vampire blood vessels. Realising he can not do so alone, Edgar turns Alan Frog, into his brother, to help him save Gwen's brother.