Harry, master of death, is working as an unspeakable to hide the fact that he isn't ageing. One day he accidentally takes a trip through the veil of death, and lands in a very different London. Searching for any signs of magic or supernatural events he can find, he finds his way to Hellsing and joins them in order to protect the innocent.

After the second wizarding war, Harry and Hermione uncover evidence that magic is not a naturally occurring phenomena, and believe that someone interfered with evolution. They could never realize how right they were and how much this knowledge might affect the future. A century and a half later Harry, the last surviving magical, heads out into the galaxy to search for answers.