After surviving the horrors of humans and robots corrupted by alien ruins in Network Effect Murderbot is more than ready to take it's humans back to Preservation where they belong. Sadly it's humans, along with ART's humans, are determined to save the colonists from the greedy corporation trying to lock them into labor contracts in return for resettling them on a safer planet. Translation: the corp is trying to lock them into slavery and get them out of the way so it can exploit the planet's resources and sell the illegal alien material on the black market without disclosing the horrible corruption of bots and humans it causes. If only the idiotic colonists weren't still determined to disagree with anything another faction wants. At least they've quit killing each other so now it's only the remaining corrupted bots that Murderbot has to fight until the idiotic colonists finally remember that there might be another settlement hidden on the planet in yet another potentially infected pre-corporate bunker. Somehow life continues to live down to Murderbot's expectations.

Murderbot (MB) is back in its first full length novel of the series. MB returns to its role as a planetary expedition security bot but now it's actually getting paid. Things went alright; it only had to interrupt watching shows long enough to kill a few pirates, but of course the whole thing would have taken less time if the humans would have just listened. Not its favorite humans, they know better. However, on the way back to Preservation is when things get completely derailed because they are attacked by.....ART?? Murderbot doesn't really believe in the concept of "friendship" but ART's attack still seems out of character. Murderbot thought humans were the biggest inconvenience in its life, but it turns out aliens hijacking its not-friend is far worse.

No one likes or trusts SecUnits, especially a SecUnit, and most especially Murderbot who hacked it's own governing module and now has to worry about detection as well as rogue SecUnits. Technically, it's a rogue SecUnit itself. which are usually easily identified by the trail of dead bodies but before it could start killing helpless humans it was distracted by the entertainment serials it downloaded. Turns out it would rather watch soap operas while going through the motions of its job than kill the clients it's contracted to protect. Not that it's never tempted, humans are definitely irritating. Murderbot's narrative is cynical, ironic, sarcastic, and occasionally touching. Its adventures are full of action but also include a running commentary on the foibles of human nature. Hence, the irony and sarcasm.