Collects X-Men: Red #6-11. The adventures of the newly resurrected Jean Grey and her handpicked team continue! One of the X-Men's greatest foes has come calling on Namor's undersea kingdom of Atlantis, and they're determined to bring about its end! Jean Grey and the Red team find themselves out of their element and under the sea as they must repel a devastating attack! Plus: The world grows more hostile toward mutants every day, and one of the X-Men's fiercest foes is working behind the scenes to keep it that way! But Jean has had enough of the hateful world she was reborn into, and it's time for her to confront the one responsible head-on. Prepare for a seismic showdown between Jean Grey and Cassandra Nova!