Ant Man and the Wasp Trailer Breakdown.

The Quantumania trailer:

Quantumania Breakdown.

In this shot we are seeing Scott getting re-hired in the smoothie shop from Ant-Man (2015) assuming he has got lots of fame since Avengers Endgame.

Scott hi-fives a young kid with a Ant-Man bag which you can actually buy at https://toywiz.com/marvel-ant-man-ant-man-backpack/

Cassie Lang builds a space signal but, Quantum. As Scott says in the 2018 film, "Do we have to add Quantum to everything?" It backfires though and we see the room shrink into the beam.

The title card shows and Elton Johns Yellow Brick road plays. We see some weird tornadoes in the sky which might be time vortex that we heard about in the 2018 film.

Cassie and Scott come across some quantum bandits who I believe are some of MODOKS servants because we know he is going to be I this film.

Kang's city forms together like rings I believe Kang's connection to rings maybe connected to Ms. Marvels bracelet, and that is what set her back in time, Kang.

In this scene we see a rather unusual set of Lighting which reminds me of some of the Kang comics, Perhaps the final battle?

We see a beat up Scott and Hope in new suits, Hope in a comic accurate suit and Scott in a roughly same suit but his Pym pills are on his chest instead of his hand probably too prevent

We see Scott run through a world of himself, some of them tangling and unraveling, I believe this is inside one of those time-vortex Janet warned Scott about in the Ant-Man and the Wasp post credit scene.

The final team up shot shows Scott Lang, Cassie Lang, Hope-Van-Dyne in all new Ant-Man suits. I am assuming Cassie made the suit outside of the Quantum realm.

The final shot shows Kang talking to Ant-Man. In D23 trailer footage the conversation continues:

Ant-Man: I am an Avenger

Kang: You're an avenger?, have a killed you before? They all blend together in the end. Ant-Man: Who are you? Kang: I have lost something, and your the only one who can find it, so do we have a deal, Ant-Man.