The X-Men come to the aid of Jubilee when her foster parents turn her in to the mutant registration she is attacked by Sentinels. The X-men save her and bring her to their facility. There, she learns a little about them. When she decides to go back and check on her parents, she is captured. The X-Men discover that the group running the Mutant Registration Program intends to track and eliminate mutants, so they decide to enter the building and destroy all the data.