The Lambchops are contacted by the President, who confides to them that the Earth has been contacted by an alien planet, Tyrra, and that the USA plans to send a normal American family on a mission of peace. When they arrive, the Lambchops find they have been borough to Tyrra under false pretenses, but decide to help the Tyrrans, who are not bad at heart, and only a few inches tall.

I read this to my kindergarten class, and found it even rougher going than the previous book, as Brown’s style of dialogue makes it hard for kids to follow what’s being said, and new concepts are glided over where they ought to be dwelt on a bit longer. Of course, the ideas are clever and the prose is amusing, with the Lambchops taking all the bizarre things that happen with the usual aplomb. But it’s perhaps just a bit too breezy in style for kindergarteners.