At the D23 Expo, Paul Rudd hyped up ”Ant-Man and the Wasp: Quantumania” as something never seen before from an “Ant-Man” film, and the sneak peek of the trailer shows just how important this film will be for the MCU. The trailer — that differed from the footage that was shown at San Diego Comic-Con earlier this summer — depicts Scott Lang enjoying his newfound fame after the events of “Avengers: Endgame,” with a new book deal, high-fives on the street, and people still calling him Spider-Man. But it turns out that her daughter Cassie has a secret. During the five years that her entire family was gone after The Snap, Cassie was working on technology to access the quantum realm based on Hank Pym’s notes. But when she activates the beacon she invented, the machine creates a vortex that sucks Cassie, Hank, Scott, Hope and Janet into the quantum realm.