With Voyager two years from home because of the advanced warp core, Tom and B'Elanna's wedding, and Ensign Harper's new baby, everyone onboard the ship is happy. Suddenly, several crewmembers are infected with a strange illness. As the days go by, more and more people are infected. Chakotay and Tuvok come up with an answer. The illness is being caused by radiation from the advanced warp core. The radiation is causing everyone to slowly die because almost everything on Voyager is made of deuterium. It appears that all of Voyager's crewmembers are duplicates, as is the ship itself.
