Walter Mitty, played by Ben Stiller, is an introverted, timid, awkward kind of soul who, as you already know, spends portions of his day zoned out in daydreams where he is the heroic, romantic figure he fails to be in real life. When he’s not daydreaming, he’s a negative asset manager forLife magazine, in charge of all the photographs that make it to print. Despite the importance of the role, he’s a very small cog in the machine. Times are tough at Life and soon everyone’s job is on the line as the title transfers to an internet-only publication. Acclaimed photojournalist, Sean O’Connell (Sean Penn), sends Mitty a roll of negatives, one of which — number 25 — apparently contains the absolute essence of Life magazine and should be used as its final front cover. The only problem is, number 25 is missing. Gradually, Mitty’s co-worker and potential love interest Cheryl (Kristen Wiig, who I half-expect to see in my refrigerator as she’s in everything else right now) and his mother (Shirley MacLaine) convince Mitty to track O’Connell down in the hope that he still has the negative. The only problem is, other than the other only problem I mentioned earlier, the last anyone heard of O’Connell he was in Greenland and as the unadventurous Mitty notes, you can’t get there by train.