In the mid 23rd century, the Earth Alliance space station Babylon 5, located in neutral territory, is a major focal point for political intrigue, racial tensions and various wars over the course of five years.
After his supposedly dead wife Anna turns up very much alive on Babylon 5, Sheridan travels with her to the Shadows' homeworld Z'ha'dum. Secrets are revealed and Kosh's warning that he will die haunts Sheridan.