Official Extended 'Jack the Giant Slayer' Clip: 'Here comes the thunder'

An ancient war is reignited when a young farmhand unwittingly opens a gateway between our world and a fearsome race of giants. Unleashed on the Earth for the first time in centuries, the giants strive to reclaim the land they once lost, forcing the young man, Jack (Nicholas Hoult), into the battle of his life to stop them. Fighting for a kingdom and its people, and the love of a brave princess, he comes face to face with the unstoppable warriors he thought only existed in legend... and gets the chance to become a legend himself.