"A 15-year-old boy has two objectives: To lose his virginity before his next birthday, and to stop his mother from leaving his father for her dance teacher. ". That's what it says here about "Submarine" -an English coming of age story whose coming attractions seems OK but nothing special. A lot of voice overs, if that helps.
However, if you are an Arctic Monkey's fan, of more interest might be Alex Turner's 5 songs. They sound like an acoustic Arctic Monkeys with everything that implies.
Good luck with that virginity thing, kid.