This final published volume in the Star Ka’ats series reads more like a continuation than a conclusion. Young humans Jim and Elly Mae are well settled in with the telepathic alien Ka’ats. But not everyone on the world of Zimmorra is happy. A few of the cats who were rescued from Earth before it presumably exploded into nuclear war have not taken well to the Ka’ats’ laws and culture.
One cat in particular, Boots, whom Jim rather likes, sneaks off to hunt, which is a major crime among the Ka’ats. Jim catches him and frees his mouselike prey, and warns him against breaking the law. Boots is not a happy cat, and he has no desire to stop hunting. Hunting is what he is.
This is a general crisis, but there may be a solution. Thanks to the metal the humans helped the Ka’ats find and manufacture, the Ka’ats and their robots have built a spaceship. They plan to head back out among the stars and find lost Ka’at colonies.