Kosh summons an inquisitor to test Delenn's motives, and G'Kar tries to maintain his position as leader of Babylon 5's Narn population while organizing an underground resistance.

Two officials from the Ministry of Peace come to Babylon 5; one to deal with the Centauri's continued expansion, and the other to check on the local Nightwatch. Meanwhile, a Narn heavy cruiser seeks sanctuary while they make repairs, and Keffer continues his search for proof that Shadow ships exist.

The new Centauri appointed Narn government send a replacement for G'Kar, while an alien probe threatens to destroy Babylon 5 unless it gets the answers for a series of complicated scientific questions.