Forget the original short story: This has been hijacked by Ben Stiller’s ego (he also directed) into a confused commercial mess. He plays a mild-mannered worker at LIFE magazine, who lapses into heroic daydreams. After a threatening job event and the urging of a woman (Kristen Wiig in her blandest role yet) he’s inspired to go on a real adventure that takes him to Greenland and Afghanistan. The plot abounds with illogical moments, heavy-handed characters, loose ends and embarrassing product placement. There’s nothing particularly imaginative here, although some of the scenery is pretty. Stiller lacks the acting chops or directing skills to give this silly fantasy any true heart or vision.