The story of this episode isn't actually that bad, but somehow it just doesn't fit with Star Trek and the Voyager canon. It's not a science fiction story - instead we see how one of Captain Janeway's ancestors met her husband on New Year's Eve 2000.
Janeway always believed that this ancestor took part in missions to Mars and was also involved in the construction of the Millennium Gate. However, as the story progresses, it turns out that this was not the case. Janeway then feels annoyed and in a way betrayed - by an ancestor who lived over 400 years ago!
Her mood only brightens when her crew points out to her that her ancestor helped spark Janeway's interest in science and space travel in one way or another and that it doesn't matter whether she went to Mars herself - she was and is the role model that ultimately motivated Janeway to embark to the stars herself.
However, it's kind of amazing how well Janeway and the other crew members know about ancestors who lived several hundred years ago. I don't know what my ancestors did in the 1600s. I don't even know what my great-grandfathers and -mothers did! And as Seven aptly says: This great-great-great...grandmother lived so many generations before Janeway that there is virtually no genetic information about her left in Janeway. Nevertheless, this ancestor of Janeway looks exactly like her (they could have at least changed the hair color and hairstyle!), as she is of course also played by Kate Mulgrew.
Also pretty ridiculous: When Seven uses the computer to look for clues about Janeway's ancestor, she finds only very little information. Neelix then shows off all his computer know-how by instructing the computer to search not only Starfleet databases, but also others - public, private, etc. Lo and behold: the computer finds an old family photo! And Janeway is completely surprised at how Neelix managed to do it! By the way: Why are 400-year-old documents such as birth certificates, electoral rolls, etc. Included in the Voyager database?
All in all, half entertaining. Voyager definitely had worse episodes than this but also far better ones.
