Every low budget sci-fi show that has come after is nothing more than a rip off from Lexx (with bits from Star Trek, Star Wars, etc).
Plot wise I won't ruin it for you, but I will give you some history.
The show aired from April 18th 1997 to April 26th 2002.
The main character was "Zev" of planet B3K, a renegade love slave who changes bodies several times during the story line. (If Captain Kirk and Spock can do it, sure why not.)
Other primary characters are Stanley, security guard 4th class. He's the average Joe character who surprising is made captain of the ship (Ironically he wears a red shirt); and Kai, an undead and emotionless (and therefore logical) assassin.
And I don't forget the ship, which is alive and basically a giant space insect.
I give the series 4 stars for sheer weirdness, ingenuity, plot and enjoyability. The minus 1 star is for weirding me out too much. So in theory some of you might give the show 5 stars because you like that sort of thing.
After Lexx came out there came a slew of similar TV shows like FireFly, Farscape and similar shows. Frankly I don't have time for such shows any more. There's just too many of them.