He received an anonymous phone call to search for a hacker that goes by the alias "Trinity". Ash traces Trinity learning that other detectives have failed in the same task before him, one had committed suicide, one had gone missing, and one has gone insane.
Eventually Ash finds Trinity after deducing that he should communicate using phrases and facts from Lewis Carroll's Alice's Adventures in Wonderland. He finds her under the alias "Red Queen" and proposes a meeting, and he successfully finds the location. At the meeting she removes a "bug" from his eye, planted by Agents earlier in one of his "eye exam dreams". Agents appear and attempt to apprehend Trinity, which leads to a shootout between the Agents and Ash and Trinity. While trying to escape the train an Agent attempts to take Ash's body, forcing Trinity to shoot him in order to prevent the Agent from appearing and taking over his body.
While Ash is wounded, he and Trinity bid their farewells with no hard feelings. Trinity escapes telling Ash that she thinks he could have handled the truth. Agents enter the car to find Ash, who points his gun at them while looking in the other direction and lighting a cigarette. The Agents turn to Ash who, even though he is armed, will likely die.