D'Argo, Rygel, Scorpius and John visit a mental arts training camp to obtain information from the leader, Katoya. One of the other trainees turns out to be Macton, the Peacekeeper who killed D'Argo's wife Lo'lann, his sister, and framed him for the crime. He accuses D'Argo of beating Lo'lann to death. D'Argo vows to kill him.

Scopius loses a mental duel with Katoya. Outside, John runs into Macton, who claims that D'Argo killed Lo'lann in a fit of blackout-causing hyper-rage. Whilst Rygel takes on a Charrid in the arena, John asks D'Argo whether these blackouts happen. A flashback shows him raging at Lo'lann, and he admits they do. John decides to leave when he is prevented from helping Rygel.

D'Argo does badly in the arena because he is unable to control his rage at Macton. A flashback shows him pleading with Lo'lann to tell him if he ever hurts her. Meanwhile, John wakes up in a tiny cell over a pit of burning coals - remedial training. Katoya tells him he can come out when he can catch a key - but each one falls into the coals. Scorpius appears, and tells John that he is undergoing anti-Scarran training - training Scorpius himself has undergone.

After meeting Macton once more, D'Argo begins to wonder if he did really hurt Lo'lann. He asks Katoya to help him find out. Using the arena, he relives a burst of hyper-rage, and realises that he did hurt Lo'lann, but she hid it from him. Suddenly, Katoya disappears from the arena, Macton taking his place.

Macton shows D'Argo his version of events, in which the Luxan beat Lo�lann until she killed herself. Driven to hyper-rage, D'Argo becomes helpless, but manages to use the training Katoya gave him to regain control. He forces Macton to show the truth - that he killed his own sister, then beat the corpse to frame D'Argo.

John finally wrests a key from the bed of coals and escapes. On the way back to Moya, Scorpius tells him that the creature they encountered on Earth may have revealed its location to Grayza.