Neelix is confronted by Haakonian scientist Ma'bor Jetrel, the man responsible for creating the Metreon Cascade, a device that was used to annihilate a major portion of the Talaxian race, including Neelix own family. Jetrel is allowed to board Voyager when he asserts that Neelix will soon fall ill from long-term effects of the Metreon Cascade device. Tempers flare between the two, with Neelix instantly distrusting the man who murdered his loved ones. Ultimately, Neelix must discover Jetrel's true motive for being on board Voyager before it is too late...