The Runaway Summer(1971)

The Runaway Summer is a British drama following Mary, a lonely girl sent to her aunt and uncle's coastal home for the summer while her mother travels to Africa. Struggling to fit in, Mary befriends a young boy who is actually the son of an African diplomat—and he's been kidnapped. The two form an unlikely bond as they work together to keep him hidden and safe from those searching for him. Their secret adventure becomes a test of loyalty, courage, and friendship as the stakes grow higher.