Chang led an expedition to a newly discovered planet out on the Rim of known space, codenamed Alpha Omega III. He found ruins belonging to the Shadows, but didn't learn of that, nor that the race was still there in hiding. He came back to Sol System and convinced Sheridan to come with him on a follow-up mission. He then led the Icarus back where they would explore further. He was killed by Dunne, a Psi Corps agent attached to the expedition, after most members of Chang's team were trapped by the Shadow artifact dubbed the 'Egg.'