"The Ministry must be seen to do something", and with that, Harry Potter's wand is snapped. Expelled in his second year, he is invited to a new school famous for being the home of one of the Eight Great Repositories of Knowledge. But with Voldemort alive and the Chamber of Secrets still open, he will need every resource his new school possesses to stay alive in the coming years.

Newt/Harry, Timetravel Shenanigans, Canon Divergent. His plan was to avoid changing the timeline. He knew he wouldn't be able to resist if the opportunity presented itself. So he fled to Africa, where opportunity found him instead.