In the cheeky vein of fun that made "The LEGO Movie" an international delight, the self-appointed leading member of that cast LEGO Batman headlines in his own silver-screen undertaking: "The LEGO Batman Movie." But there are some significant changes fermenting in Gotham, and if he is to be successful in saving the city from The Joker's maniacal takeover, Batman may have to abandon the lone vigilante characteristic, attempt to work with others, and perhaps, just maybe, learn how to lighten up.