The Earth military encounters an alien race called the Minbari. Through a series of accidents and misunderstandings, a war breaks out that nearly results in the death of every human on Earth. The war and its aftermath provide the background for this series.

Londo suffers a heart attack and falls into a surreal dream, where he must face his greatest fear in order to survive. Elsewhere, Delenn learns that Lennier is planing to leave Babylon 5 to join the Rangers.