Return to the Secret Garden (2000)

Sir Colin Craven is now married to Lady Mary and Martha Sowerby is now the mistress of Misselthwaite Manor, which has become an orphanage for children whose parents died in World War II. A little girl is selected to come and stay there. She finds out about the garden and realizes that it is not well, so she tries to save it by any means possible, breaking the rules along the way.