Natasha Romanoff and Clint Barton seek to destroy killer-robot Ultron following a cataclysmic event.

When The Avengers are infected by a zombie plague, surviving heroes search for a cure.

Nick Fury struggles to launch The Avengers when candidates are targeted by a serial killer.

The rough-and-tumble space pirates known as the Ravagers abduct T’Challa instead of Peter Quill.