After a communist revolution in Great Britain, the new government petitions China for help in reforming and modernizing the British education system.

China sends cadres of education professionals to serve in advisory and supervisory roles in British schools, assisting them in reforming their political education syllabuses and keeping watch over the ideological tendencies of staff.

One of them, Fang Hui, finds herself at Hogwarts. She has five years to clear out the bigots, wizard supremacists and fascists if she wants to save the school from being demolished. She’s inclined to write it off as unsalvagable at first, but one evening she finds a portrait Friedrich Engels in the room of requirement and he tells her that he studied at Hogwarts.

She spends long evenings in the room trading stories. Fred tells her the story of the things he witnessed at Hogwarts that played a role in inciting his radicalism, of how the sorting hat sorted Marx into Slytherin just because he was Jewish, of how Marx was expelled in the second year for talking other students into freeing their house elves, and how Engels was expelled in the fifth year for refusing to stop prying into a terrible secret about Griffindor house. Fang Hui tells him about what’s been happening in the muggle world, about SWCC and all the things that are happening in AES countries that he doesn’t hear about only having his one portrait in the wizarding world.

With Engels’ encouragement, Fang Hui renews her efforts in purging Hogwarts, and promises to help him finally uncover the harrowing secret behind events in Griffindor house and why the LGBTQ population of the wizarding world dramatically dropped almost overnight in the mid 1800s.