 Gustav and a former student of his concoct a mixture, a solution called quinidrine, which should reverse all effects of an early vampire bite. Gustav allows himself to be captured and bitten by Lucard with the intention of testing it, however, Max has inadvertently switched the solution with a protein drink he made for himself. Upon realizing the mix-up, Gustav and his former student, who has also been bitten, must wait for the children to save them in time to create more of the solution in order to save themselves.