Janeway and The Doctor are taken by an alien race. The want The Doctor to steal the warp core in exchange for Janeway's freedom. She tells him to not do it, but The Doctor refuses her order. He doesn't want to see her die. So The Doctor turns himself into a hologram of Janeway and infiltrates Voyager. Tuvok eventually becomes suspicious but it's too late, The Doctor has stolen the core. He did however, leave Paris and Tuvok a clue. They follow the clue right to Janeway and defeat the aliens, saving Janeway and keeping the warp core. The episode was okay, but I was expecting something better for most likely the final "Doctor themed" episode.
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