First, I should confirm the game compatibility. WWE 2K24 supports mods through community tools like Showdown, so maybe this mod is for that version. The Invasion angle in WWE history is the Invasion era from 2001, where WWF (now WWE) and WCW, ECW, and others were in conflict. The "Shut Your Mouth" promo by Triple H in 2001 was a significant moment. So the mod might add characters, arenas, or events related to that era into the game.