The crossover event between Star Trek and Star Trek: Defiant comes to a thrilling conclusion in part five of Day of Blood! Using powers bestowed upon him by the Prophets, emissary Benjamin Sisko withstands the god-killing weapon for now, but forces of the Orb of Destruction wear on him with each passing moment. Meanwhile, Worf agonizes over a fatal wound of his own that he can never hope to heal. What will become of our heroes? What will become of the universe? Can the crews of the Theseus and Defiant stop the godkiller once and for all?