Son of Soup is the second published collection of scripts from the cult television show Red Dwarf (the first collection was titled Primordial Soup), featuring the television script to one fan-favorite episode from each season. At the time of the book's publication there were only six seasons of Red Dwarf (I believe they are around series Twelve now), so six scripts is what you get.
In reverse chronological order - because why not - the episodes represented in this collection are:
Gunmen of the Apocalypse
Holoship
Camille
Backwards
Kryten
Me2 (I don't know how get the 2 to show as an exponent. Sorry.)
I've never been fully aware of why people would want published copies of film or television shooting scripts identical to the finished product, and that's despite the fact that I own several myself. I suspect Son of Soup would be most enjoyed by obsessive fans of the show, those interested in the craft of screenwriting, or some unhealthy combination of the two. If you don't feel squeamish about proclaiming membership to one of those groups, by all means, grab yourself a copy. If you are unfamiliar with the TV show, I'd suggest either watching it or instead trying out the novelization of the television show by the same name.
However, regardless of your motivation or lack thereof for picking up a copy of Son of Soup, doing so will drop you behind the scenes (in a literary sense, at least) of the last surviving human, his dead hologram sidekick, a humanoid evolved from his cat called Cat, and their reprogrammed service droid, as they encounter bizarre and even more bizarre adventures involving polymorphs, holograms, hologram clones, backwards planets, deadly VR simulations, and gazpacho soup. What more could you want?