Lord Southmere escapes from China with a microfilm of the formula for the mysterious "Lotus X", and is captured by Chinese spies who have been instructed to retrieve the microfilm from him. Escaping from his captors, Lord Southmere hides the microfilm in the bones of a large dinosaur at the National History Museum. However, he has been followed into the museum by the spies, so Lord Southmere asks Hettie, (his former nanny), to retrieve the microfilm before the spies can find it. He is then promptly recaptured by the head spy, Hnup. Hettie, and her friend Emily (another nanny), devise a plan for a group of nannies to search for the microfilm, but they are unsuccessful in their endeavors. The spies then decide to steal the dinosaur, but are outmaneuvered by Hettie and Emily, who - with a young nanny named Susan - take the dinosaur skeleton on an unforgettable journey around the countryside. When Hettie's two young charges, Lord Castleberry and his younger brother, Truscott, also become involved in the plot, all seems lost - especially for Lord Southmere!

Starring:

Aimee Delamain, Amanda Barrie, Angus Lennie, Anthony Sharp, Arthur Howard, Bernard Bresslaw, Clive Revill, Derek Nimmo, Deryck Guyler, Erik Chitty, Frank Williams, Helen Hayes, Hugh Burden, Jane Lapotaire, Joan Hickson, Joan Sims, Joe Ritchie, John Bardon, John Laurie, Jon Pertwee, Joss Ackland, Kathleen Byron, Leonard Trolley, Lucy Griffiths, Max Wall,

Genre:

Adventure, Comedy, Family, Mystery, Thriller