The Railway Children

Roberta, Peter, and Phyllis are forced to move from their luxurious London home to a tiny cottage in the countryside after their father's mysterious disappearance. Now, the children spend all their free time near the railway, where they meet all sorts of people. The children prevent a train crash, save an injured boy, and willingly help their neighbors. It is no surprise that those around them are eager to help the children, including in the search for their father.