When you gaze into the Black Vortex, what reflection stares back? That's what the Guardians of the Galaxy and the X-Men are about to find out. The two teams' pair of star-crossed lovers, Star-Lord and Kitty Pryde, have stolen this ancient artefact to keep it out of the hands of Peter Quill's father, the deposed Spatax emperor who now calls himself Mr.Knife. But Peter's father wants it - and so does the son of Thanos.