We have very limited details about the film, but based on what the cast has teased, it sounds exciting. Most recently, Larson teased that "a lot of really juicy things" are happening in the film that she "cannot say a word about." "But, boy oh boy, is it good," she added. "You're going to be very excited about it."
It also seems like the film will explore the dynamic between Parris's Monica and Larson's Carol that was teased on WandaVision. "Yes, when Monica was an 11-year-old girl, with her mom and Auntie Carol, they had a beautiful relationship," Parris previously told ComicBook.com. "And so I think what's been awesome with WandaVision is getting to see Monica grow up, and we haven't seen her for 20 years plus, or however many, and getting to see slowly, it's being revealed what her life has been since we last saw her. And so Carol Danvers was a part of her life when we last saw her, and seeing that there is still, there is something there, I think is very exciting." She added that the Captain Marvel sequel "gives us space to further explore what might be happening" between the two characters.