Cassie Reeser is a bona fide superhero. But what did she have to give up to get that way? Her brother Peter's experiments might have saved her life, but now she's little more than a weapon in his eyes and he'll use her how he wishes.

Before she was a Protector, Cassie was her brother's personal lab rat. Can she break from his tyrannical rule or will she sacrifice herself to save her friends?