Until her transformation into the strongest member of the group, Caitlin Fairchild was a student at an Ivy League university. Though she loves her GEN¹³ family, she finds herself at an emotional crossroads that causes her to question whether or not she wants to remain part of the team. But Caitlin's decision to lave GEN¹³ leaves the group fatally vulnerable to an enemy that has sworn to destroy GEN¹³ - one who has intimate knowledge of their strengths and weaknesses and finally has the weapon needed to achieve total vengeance. An all-new adventure by Sholly Fisch, writer for X-Men Legends and The Ultimate Hulk.