The Scouting Book for Boys (2009)

Best friends David and Emily enjoy their carefree life in a coastal caravan park. When they learn that Emily is being forced to move away, David he agrees to help her hide out in a remote cave on the beach. Emily's absence soon becomes complicated, as David watches the effect on her family and police suspect one of their neighbors of involvement. When Emily tells David the real reason she wants to hide, his world is shattered. With his complex feelings for Emily growing stronger due to their shared hidden existence, David takes action.