Read comic: Captain Marvel (1989)


Following her departure from the Avengers due to the loss of her powers, Monica decides to join the marines. It is here, as their captain, that she encounters the villain Powderkeg. 
During their scuffle, it is revealed he is working for a South American crime lord who has also enlisted the aid of Moonstone. 
As he powers begin to re-manifest themselves as variations on what she's used to, it becomes both a race against time and a re-learning of her powers.