In this year's adventure comedy, The Secrey Life of Walter Mitty, Ben Stiller plays the titular Mitty who is a timid photo manager for a magazine. His mind wanders all over the world as he passes time living vicariously through his fantasies and daydreams, until a pretty co-worker (Kristen Wiig) catches his eye who he'd like to ask out but is too shy. However, when a photographic negative goes missing, Mitty makes an unusually spontaneous decision and embarks on a real-life adventure that takes him beyond his wildest imagination.

Ben Stiller
Ben Stiller Demonstrates His Filmmaking Versaility In ...Walter Mitty.

The film is indirectly based on the 1939 short story of the same name from the My World and Welcome to It collection by author James Thurber. Zoolander actor Ben Stiller both directs and stars in this year's exciting novel adaptation and remake of an existing 1947 film inspired by Thurber's book.

Watch 'The Secret Life Of Walter Mitty' Trailer:

The trailer showcases clips from the visually dynamic movie, giving a flavour of The Life of Pi-style wonder and awe at our natural surroundings as well as an emotionally-stirring soundtrack. With screenwriter Steven Conrad (The Pursuit of Happyness) the film promises to be touchingly sweet with enough comedy and adventure to hold interest.

Kristen Wiig
Kristen Wiig Will Play Mitty's Love Interest & Co-Worker, Cheryl.

We see Stiller with a snow-encrusted beard, performing improbable flying and jumping stunts that suggest his daydreams are interwoven into the narrative as Mitty tries to spice up his boring office job. The Madagascar actor spoke to Empire (reported by Metro) about the movie that has been in the pipeline since 2005, saying "What I learned as I was editing the movie is that people love the fantasy sequences but they also get invested in the real-life aspects of the movie too. They want to enjoy the fantasies, and for them to be fun and funny, but there's also this natural desire for the story to go forward. A little goes a long way.

"We were aiming for something indefinable, a movie that left you with a feeling at the end. I've never made a movie like that, and it's a really hard target to hit. It's hard to put into words.'

The Secret Life of Walter Mitty will be released on Christmas Day 2013 in the USA and on Boxing Day in the UK.