When their simple mission goes wrong, Eren and Levi unknowingly use a Portkey hidden in the most unlikely of places. Injured and disbelieving, the two of them find themselves in the Great Hall of the strangest and most frightening school they'd ever seen. It was going to take a while to get used to. Set after Shingeki No Kyojin series 1, Year 5 of Harry Potter.

Harry jumped into the Veil to save his godfather. Both thought they were going to die, but instead they ended up far in the past where humanity is still trapped inside the three great walls and the Titans are still walking free in this earth.