The story starts with a trial where Sirius, the bright star from the constellation of Canis Major, is found guilty of murdering another star with the help of a Zoi. Sirius' sentence is quickly carried out as he is sent to Earth to find the missing Zoi during its life as a dog or die trying. Sirius soon finds out that humans can be both cruel and caring, not only to other animals but also towards other humans.

Every book penned by this author is a joy to read, it's so easy to get immersed in her way of telling stories! And when the main characters are a puppy and his unlucky but caring mistress Kathleen, it's impossible not to love both. I'm sure the author had a dog at some point in her life because the way she describes Sirius' behaviour and needs are dead-on. Lovely story with a slightly rushed ending. I wish I had read this when I was younger, I'm sure the book would have been a favourite of mine by now.