When twins Zara and Amina move into a new house and adopt a tiny kitten, they can't wait to spoil her and play with her all the time. But the sisters have different ideas about the best way to look after Pixie and as they start at a new school, the divide between them only grows. Then at their joint birthday party, an argument between the girls sends Pixie running off, scared. She's so small, she could be anywhere! Will Zara and Amina be able to work together to find her?