The Harry Potter and the Deathly Hallows are probably the only ones that don’t happen in Hogwarts.
The journey follows with three characters where they begin finding Horcruxes (secret magical object).
Although the road to Horcruxes seemed easy, Harry, Hermoine, and Ron have to face dreading challenges that reshape the entire story.
Just like all the complexities, Harry faced ever since he entered Hogwarts, this hunt didn’t go as planned either. They start off by planning to stay in an actual house for a while, but as the trio messed up, they had to leave the place immediately.
In the book, you get to see the transition of Harry from an immature freshman of Hogwarts to an adolescent. In the end, they go back to Hogwarts to get one of the last Horcruxes.
This leads to a whole new trail of battles, including students, teachers, and the Order of Phoenix against the Dark Lord. Hogwarts had to bore the serious consequences of this epic war.
The book definitely did end the fantastic series that was going on, but the last twist surely stole all the attention.