Sand Land is interesting. This was a single volume, self contained story from the late Akira Toriyama. It tells the tale of the titular "Sand Land," where after a major apocalyptic event, there is limited water and the King hoards what remains, selling it to the people at high rates. There are also demons walking the world for reasons.
Enter our heroes - Thief, a sneaky and balding demon; Beelzebub, the son of the King of the Demons; and Rao, a human on the mission to find a secret water supply to the south to free the people from the King's tyrannical rule.
The story follows this trio as they travel south, run into various fights, and eventually save the day. In the process, the story rails against those who hoard resources and has some social commentary about how governments / militaries lie to their people. There is also sub-textual commentary about climate change and how certain governments treat indigenous populations and (sometimes purposefully) disregard their existing knowledge of the world after crushing them.
Overall, it's a fun story and I'm glad I had a chance to re-read this great, physical edition before the new anime / video games drop. Toriyama gave us a bunch of stories before he passed and I hope you get a chance to check out some of his stories outside of Dragon Ball.