We can only recommend reading the science fiction novel, which allows simple writing to be read by the majority of readers, including young teens. Oms, a sort of post-apocalyptic novel, tells the story of regaining their dignity by humans, then regarded as a pet by inhabitants of another planet on which they were taken. Through Terr, agile little man, the "Oms" regroup, find the way of knowledge, struggle, projects supported by the people. Persecution, exodus, promised land, recognition. There is something biblical and it probably will recognize the exile and dispossession suffered by many peoples on Earth. The story told by Stefan Wul, beyond its form of exoticism, is universal, and that is why it is so pleasant.
A very good book of SF, but first a very good all short book.