April 6th, 1917. As a regiment assembles to wage war deep in enemy territory, two soldiers are assigned to race against time and deliver a message that will stop 1,600 men from walking straight into a deadly trap.

Hal (Timothée Chalamet), wayward prince and reluctant heir to the English throne, has turned his back on royal life and is living among the people. But when his tyrannical father dies, Hal is crowned King Henry V and is forced to embrace the life he had previously tried to escape. Now the young king must navigate the palace politics, chaos and war his father left behind, and the emotional strings of his past life - including his relationship with his closest friend and mentor, the aging alcoholic knight, John Falstaff (Joel Edgerton).