They’ve been to Latveria, Atlantis, the Moon. Now, their most hazardous stop yet: The Civil War-ravaged United States, for a meeting with none other than the point man for the U.S. government’s implementation of the Superhuman Registration Act -- Tony Stark. When T’Challa last saw his former Avengers teammate, his attempt to play peacemaker exploded in his face. Is that all in the past...or do the two men have unfinished business...?