Sam likes being a twin. He likes having two mums. He likes cheese sandwiches and his dog and drawing comics with his friend Pea. He does not like humous - or heights... His twin sister Sammie likes being a twin too. She knows that she's perfect best friend material for somebody - the girls in her class just haven't realised yet. And she knows that she's the best Sam - Sam A. Both Sam and Sammie - and everybody in their lives seems to be keeping secrets - which ones will come out? Meet the very different twins and their very different problems in this funny, heart-warming story of modern family life for boys and girls.