King Arthur has a mortifying dream in which he gets eaten by wild beasts on the night before he settles things with Modred
Anything I can do for you sir?
Modred and Arthur meet after negotiations to sign a treaty, but things go awry when a sword is flashed incidentally. His armies battled it out ending in a draw with Arthur and Modred being 2 of the 4 left alive.
This isn't happening
Sir Arthur and Modred decide to duke it out, ending with Arthur receiving a sword to his skull.
Arthur is taken to a nearby chapel and lay dying among the two other knights that lived alongside him
After attempting to lie and keep the sword twice, Sir Bedivere is obedient to Arthur's request to throw his excalibur into the lake. A mystical hand catches it.
Sir Bedivere brings the almost-dead Arthur to the lake where he is taken away on a barge by the same creatures that took his sword