The official 14th Dragon Ball Z movie will be released in Japanese theaters and IMAX on March 30th.
The events of Battle of Gods takes place several years after the battle with Majin Buu, which determined the fate of the entire universe. Wiss and Bills, the God of Destruction, are tasked with maintaining some sort of balance in the universe. After awakening from a long slumber, Bills is visited by Wiss and he learns that the galactic overlord Freeza has been defeated by a Super Saiyan from the North Quadrant of the universe named Goku, who is also a former student of the North Kaiō.
Thirty nine years ago, when infant Goku was found in the woods by Grandpa Gohan, the Oracle Fish foretold by its prophetic powers that a strong opponent would appear before Bills, the Super Saiyan God. Bills tracks down this warrior, Goku, on Kaiō-sama's planet with his ally, the mysterious Wiss, and challenges him for a battle. Ecstatic over the new challenge, Goku does not heed Kaiō-sama's advice and battles Bills, but is overwhelmed and defeated. Bills then departs, but his eerie remark "Is there nobody on Earth more worthy to destroy?" lingers on.
edit: The film will be an official part of the Dragon Ball storyline, with original creator Akira Toriyama deeply involved and being set between chapters 517 and 518 of the original manga, often referred to as the "lost decade" after the battle with Majin Buu.