WandaVision: 10 Things You Need To Know About The Disney+ TV Series
4. Warping Reality
Kevin Feige has said on a number of occasions that the Scarlet Witch is the Marvel Cinematic Universe's most powerful hero, but it seems her powers will be fully explored during the events of WandaVision. In this trailer, she's shown quite literally changing her surroundings, creating a brand new sitcom setting for her and The Vision to exist in.
Later, it appears as if S.W.O.R.D. is on the outskirts of some sort of bubble that's been created around a town that Wanda may have inadvertently taken hostage as part of her deranged fantasy.
That could explain why the man who asks about the couple's history appears to grow irate; perhaps he's someone who's particularly strong-willed and almost breaking out of the world that's been created around him? Either way, there's something very strange going on, and it's hard to imagine anyone other than Wanda being responsible for what's going on.
It is, however, feasible that Agatha Harkness and her coven are the ones really behind it all!