The further adventures of Rex Nihilo and his long-suffering robot sidekick Sasha -- or rather, the earlier ones.
This opens with Rex's blundering into buying her in a lot of mechanical items sold together, and her subsequent entanglement in his effort to get out of trouble with the local crime lord. It ends up with them on the title planet, where food-smuggling is big business as the corporation ruling the planet tries to get everyone on their SLOP.
It involves a past con by Rex, selling 399 defective robots to that company; the demo mode of robots; strawberries; a casino and slave labor; and more. A fair chunk of satiric bits, of various SF works, though not so much the plot.