Collects Captain Marvel #7-12. Marvel NOW! Captain Marvel goes head to head with...Captain Marvel? Former Captain Monica Rambeau returns, but what's her problem with Earth's new Mightiest Hero? What threat is lurking below the ocean's surface? And can both Captain Marvels stop it before they get ship wrecked? Then: Carol finally returns home, but is changed. What is weakening Captain Marvel's powers? How will the lifelong high-flyer react when she discovers that she can no longer fly?