Meet Martha Felicity Molly-Anne May - let her bring chaos into your day. She's the naughtiest girl you'll ever meet, even Mary Poppins would be knocked off her feet! When Martha spends the day with Miss Harrington-Chive, the new nanny gets more than she's bargained for. At the bandstand, at the science Museum and at the restaurant, this poor childminder finds herself screaming - Martha, No!