Ant-Man and the Wasp: Quantumania

Some time after the Blip, Scott Lang returns to living a full life knowing that he helped save the world. But now, Scott along with his family are accidentally transported down to the Quantum Realm. Down there, they discover a world of unimaginable people that inhabit the Realm. But they soon discover that a rebellion is at war with the warmongering Kang the Conqueror who intends to conquer the Multiverse. Now Scott must do everything he can to return home with his family and stop Kang from causing mass chaos.—Blazer346