Merlin and the War of the Dragons is a 2008 fantasy film produced by The Asylum, based loosely on the legends of King Arthur. It was filmed entirely on location in Wales.
Soon after Vortigerns coronation, a large army of giant, firebreathing dragons lands in Britain and begins to terrorize the land, setting fire to buildings and feasting on any who are unable to escape. Due to their size and number, the dragons threaten the very existence of Britain itself, and Vortigern instructs Merlin to lead an army against the dragons, ordering his best generalsHengist Iago McGuire and Uther Dylan Jonesto aid Merlin in any way possible.With the help of Vortigern and his generals, Merlin begins to think of ways to defeat the dragons, who are growing stronger every day whilst Britain grows weaker. Using magic and knowledge, Merlin devises a plan that will ultimately decide the fate of British history. ........
Source: Wikipedia