Viggo Mortensen stars in Captain Fantastic, the hilarious and heartfelt journey of a father raising his six children off-the-grid in the American wilderness.

Far from the modern world, Ben (Mortensen) teaches his kids survival skills and home-schools them with a challenging curriculum of science, philosophy, literature and a healthy dose of anarchy.

But when tragedy strikes, the family is forced to leave their self-created paradise and re-enter society. As the kids face the perils and excitement of an unfamiliar world, Ben begins to question the choices he has made for his family.

Directed by the acclaimed Matt Ross, Captain Fantastic is in cinemas from Thursday 8 September. We’ve got 20 in-season double passes to give away to see the film — enter now for your chance to win!

HOW TO ENTER: Enter via the form below. *Entrants agree to receive future promotional offers from Bmag. This prize is not redeemable for cash and cannot be transferred. Competition closes 9am, Monday 5 September. UPDATE: This competition has closed. Winners will be announced shortly!