The witty and somber sides of growing up in working-class Britain are explored in this coming of age drama. David (Thomas Turgoose) and Emily (Holliday Grainger) are a pair of teenagers who grew up in the same trailer park in Norfolk. David and Emily have grown to be best friends; his introspective nature is a compliment for her rambunctious side, and they share a fondness for playing tricks on others. However, life hasn't been kind to Emily lately -- her mother (Susan Lynch) has been deemed an unfit parent by the court, and her custody has been awarded to her father (Nick Sidi). Emily isn't happy with this turn of events, and rather than move in with her dad, she disappears. David is worried about Emily's safety until he gets word from her that she's moved into a cave on the outskirts of town. David becomes part of Emily's support system, bringing her provisions, but his deeper feelings for her are hurt when he finds out Emily has a boyfriend, an older man named Steve (Rafe Spall), and that she's pregnant with his child. The Scouting Book For Boys was the first feature film from director Tom Harper.