The initial trailer for Captain Marvel emphasized that the title hero is someone who couldn’t remember her own past, implicitly because something was suppressing her memories after she got superpowers. Now, the most recent trailer goes into more of how Carol Danvers became part of the war between the Kree and the Skrulls, the past of S.H.I.E.L.D., and why she’s Nick Fury’s last line of defense in the event of a crisis.
The film will take inspiration from the Kree-Skrull War story arc from the comics, albeit without the Avengers present in the story. Instead, the movie will focus on Captain Marvel and her allies assisting S.H.I.E.L.D. with thwarting a Skrull invasion, allowing her to meet up with Nick Fury and Phil Coulson early on in their careers as agents of the organization. The film, being set before every Marvel Studios film other than Captain America: The First Avenger (which was set in the 1940s), also features a number of things tying the Captain Marvel mythology to prior movies like 2008’s Iron Man, 2012’s The Avengers, and 2014’s Guardians of the Galaxy, to name a few.