Captain Marvel
"As Carol Danvers comes to a crossroads with a new life and new romance, she makes a dramatic decision that will alter the course of her life--and the entire Marvel Universe. But as Carol takes on a mission to return an alien girl to her homeworld, she lands in the middle of an uprising against the Galactic Alliance and the 4Spartax! While investigating the forced resettlement of Rocket Girl's people, Carol discovers she has a history with the man behind the plot. But when the bad guy tries to blackmail Carol and turn the Avengers against her, it's payback time! Guest-starring the Guardians of the Galaxy!" -- Unedited summary from the book.