Carol Danvers becomes one of the universe's most powerful heroes when Earth is caught in the middle of a galactic war between two alien races.
What can I say she is the strongest hero I've ever seen in MCU. I actually watched Avengers before this and I should've seen all in order. In Avengers as you can expect she shows but it would not bother you very much even if you skipped this and jumped to Avengers. This movie reveals who she is, or who she was.