Beginning in June 2015, Ms. Marvel tied into the "Secret Wars" crossover event with the "Last Days" storyline, which details Khan's account of the end of the Marvel Universe. Wilson explained, "In the 'Last Days' story arc, Kamala has to grapple with the end of everything she knows, and discover what it means to be a hero when your whole world is on the line."[17] In the storyline, Khan rushes to deal with the threat in Manhattan. However, Wilson revealed, "She will face a very personal enemy as the chaos in Manhattan spills over into Jersey City, and she will be forced to make some very difficult choices.