Avengers: Doomsday Vs. There is still room for original-feeling ideas and hard-science storytelling to become major theatrical attractions. It is asking audiences to believe that an Avengers movie can still feel like an event. What The Biggest Upcoming Sci-Fi Movies & Events Are After ThisAvengers: Doomsday and Dune: Part Three will not be the last major science-fiction events of the decade. That is why the December 18 double feature could have consequences beyond Avengers: Doomsday and Dune: Part Three.