In 1280 A.D., King Edward "Longshanks" (Patrick McGoohan) of England, has occupied much of southern Scotland, and his oppressive rule there leads to the deaths of William Wallace (Mel Gibson)'s father and brother. Years later, after Wallace has been raised abroad by his uncle (Brian Cox), the Scots continue to live under the iron fist of Longshanks' cruel laws. Wallace returns, intent on living as a farmer and avoiding involvement in the ongoing "troubles". Wallace seeks out and courts Murron, and the two marry in secret to avoid the decree of primae noctis the King has set forth. When an English soldier tries to rape Murron, Wallace fights off several soldiers and the two attempt to flee, but the village sheriff captures Murron and publicly executes her by slitting her throat, proclaiming "an assault on the King's soldiers is the same as an assault on the King himself." In retribution, Wallace and several villagers slaughter the English garrison, executing the sheriff in the same manner that he executed Murron.
Wallace, the men from his village, and a neighbouring clan enter the fortress of the local English lord, killing him and burning it down. In response to Wallace's exploits, the commoners of Scotland rise in revolt against England. As his legend spreads, hundreds of Scots from the surrounding clans volunteer to join Wallace's militia. Wallace leads his army through a series of successful battles against the English, including the Battle of Stirling Bridge in 1297, and the sacking of the city of York. All the while, Wallace seeks the assistance of young Robert the Bruce (Angus Macfadyen), son of the leper noble Robert the Bruce (Ian Bannen) and the chief contender for the Scottish crown. However, Robert is dominated by his scheming father, who wishes to secure the throne of Scotland to his son by bowing down to the English, despite his son's growing admiration for Wallace and his cause.
Two Scottish nobles, Lochlan and Mornay,