Many separate quests begin to find the Holy Grail. Lancelot (Leo Suter), Percival (Jack O’Connell), and Bors the Younger (Rory McCann), experience deep religious thoughts. Ector (Liam Cunningham) and Gawain (Oliver Jackson-Cohen) are told by a hermit that they are not pure enough to achieve the Grail. Lancelot, Percival, and Bors are joined by Galahad (Sam Claflin). After the group of four are separated, Lancelot and Galahad continue to the Castle Corbenic. When Galahad’s embrace heals the Fisher King (Patrick Stewart), he become worthy of the Grail. When the group returns to Arthur’s castle, it is revealed that Arthur had a son with Morgause (Alice Eve) named Mordred (Jack Gleeson). Mordred kills King Arthur and some other knights, making Galahad king, Lancelot and Guinevere (Emilia Clarke) ride off to the countryside.