Tilly is lonely. She has just moved house and is finding it hard to make friends. Playing hide and seek and kicking a football aren't much fun on your own. Her toy, Blue Horse, becomes her best friend, and they share imaginative adventures. When Tilly sees another little girl one day, Blue Horse gives her the confidence to make friends. The bright, simple, full-page pictures are full of life and colour. The emphasis here is on the importance of both human friends and toy friends.