The narrative reaches its catastrophic climax during the historic June 15, 1381 conference at Smithfield. King Richard II agrees to peasant demands, granting charters of freedom and the end of serfdom. However, the truce is a trap: Mayor William Walworth suddenly strikes down Wat Tyler, and royal archers open fire on the disarmed crowd, slaughtering hundreds of commoners and executing John Ball.
Ploughman and his ally Alyce manage to survive the slaughter and flee back to Essex, only to discover their village scorched and the promised charters revoked. Instead of resigning to servitude, Ploughman gathers fellow survivors and retreats into the deep greenwood to wage guerrilla warfare.
In the film's epilogue set one year later, Ploughman, cloaked in a green hood, ambushes King Richard's royal carriage. After slaying Mayor Walworth in hand-to-hand combat, he pins the boy king to the ground. Instead of assassinating Richard—recognizing that killing a single monarch simply invites another crowned oppressor—Ploughman delivers a chilling ultimatum: 'We will haunt you forever'. The film concludes with Richard screaming from night terrors inside Windsor Castle, affirming that Ploughman has transformed into the mythic Robin Hood archetype whose shadow will forever check royal power.