Shadows of the Forbidden 『F1+Hogwarts AU』

Set in the Marauders Era, yet the Marauders do not exist, neither does Voldemort. Basically the Formula 1 grid of 2024 are all the same age, in their 6th or 7th year, it doesn't matter.
Carlos and Lando hear of a legendary treasure which doesn't appear to be so mythical after all. They, with a gentle nudge in the right direction by Professor Alonso, work together to find out the truth of the Chamber of Shadows.

Meanwhile, Oscar grows paranoid after he discovers a deathly looking Carlos in a corridor, yet he encounters Alonso, making him doubt the whole situation occurred, leaving Oscar in a state of confusion and desperation. He takes matters into his own hands, eventually leading to a shocking discovery.

Or: Lando and Carlos go treasure hunting, there's something Carlos is hiding and Oscar intends to play detective after being a victim to Alonso's mind games.

Or: Things between Carlos and Lando, as well as Lando and Oscar grow tense, things between Carlos and Alonso grow really tense, and things between Carlos and Oscar couldn't be any tenser.