"If you think you know the story, you don't know Jack." The long-delayed fairytale adventure Jack the Giant Slayer, from X-Men: Days of Future Past director Bryan Singer, is finally coming to theaters on March 1st. Warner Bros. has launched the second full-length trailer, which unleashes plenty of giants upon Jack (Nicholas Hoult) and his giant slaying buddies, which include Ewan McGregor and Ian McShane. Watch as an ancient war between giant and man is re-ignited!