Set in the idyllic English Lake District during the summer of 1935, this adventure film follows the Walker children as they embark on a sailing expedition to a remote island. Their holiday takes an unexpected turn when they encounter the Blackett sisters, leading to a rivalry and a shared quest against a mysterious enemy. Directed by Philippa Lowthorpe, the film captures the spirit of childhood exploration and imagination. Notable performances include those by Rafe Spall and Kelly Macdonald. For those interested, the movie can be viewed on 123Movies / Movies123 for free.