The new "Superman" movie features three surprising cameos from major stars. Two of the cameos are in quite surprising scenes. The third sets up the next movie in the DC Universe. Here's what happens.

The David Corenswet-led film is both a reboot and the big-screen introduction to a new DC Universe that will unfold in the coming years across movies and television. While Superman isn’t technically the first official new DCU project —that honor belongs to last winter’s Creature Commandos—the new film is Gunn’s first broad-stroke,