Three kittens (Tasha, Boris, and Bianca) live with their family in the basement of a museum, where the night guard keeps them to scare away the rats. The kittens are intrigued when a stray cat brings in a black kitten, Peter, to live in the museum. Tasha, Boris, and Bianca are not sure they want to welcome Peter. He is so different, and no one knows where he is from. Peter will have to prove his worth if he wants to become a museum kitten.

This is such an adorable book! The kittens are so cute, and I love the little adventures they have. The plot is simple, but interesting. The writing style is perfect for this age group, and even enjoyable for an adult to read.

I love the world-building of the museum and the family of cats. The old grandfather cat presides over the museum, and the caring mother cat herds the kittens into some semblance of order.

The best thing about this book was the sibling relationships between Bianca, Tasha, and Boris. They squabble and tease each other. They make mistakes, and are not always kind or wise. But they learn and grow and try to do better. When Peter is thrown into the middle of their sibling rivalry, it really mixes things up!

The illustrations are beautiful, and really bring the story to life. Seeing the artwork of the kittens makes me want to give them a cuddle!

Disclaimer: I received a copy of this book from the publisher in exchange for a free and honest review. All the opinions stated here are my own true thoughts, and are not influenced by anyone.