Nick Fury prepares for "One Last Fight" in official Secret Invasion trailer

The shape-shifting aliens are deeply seated in powerful government positions, which gives Secret Invasion a different tone. As evidenced by the lack of de-aging technology on Fury in the trailer, you'd think this "one last fight" might be his swan song for the MCU.

In addition to a handful of familiar faces, Olivia Coleman and Emilia Clarke will debut in Secret Invasion as Sonya Falsworth and G'iah, respectively.

While the teaser trailer definitely gives audiences a better look at Secret Invasion, it does an excellent job of keeping the rest of the show a mystery. It's clear Marvel Studios are feeling the backlash and they're upping the quality of their shows, as promised.

We'll find out more on June 21 if Secret Invasion will be a return to form for the Marvel Cinematic Universe or another stop in its ongoing downward spiral.

As for Samuel L. Jackson, he isn't done with the MCU just yet. Jackson will appear in The Marvels next, which is on track to premiere later this year.