Season 5 opens three years after the events of Season 4, with Camelot enjoying a brief "Golden Age" under King Arthur and Queen Guinevere. However, this peace is fragile. The central conflict of the season revolves around the "death of Camelot," as predicted by ancient prophecies that Merlin desperately tries to prevent. The Return of Mordred
If you truly want to store the episodes on your hard drive to watch without internet:
After years of secrecy, the tension regarding Merlin’s magic reaches a breaking point.
These services provide a convenient and legal way to access the show. Simply search for Merlin, navigate to the fifth season, and start streaming.