's first season begins with Katherine Langford's one-day Lady of the Lake, Nimue, being sent on a quest to deliver a certain mythical sword to a certain medieval wizard.
By the end of the season finale, she's fully embraced her Fey magic to become a queen and wielder of the Sword of Power.But after surviving being hunted by the Red Paladin — in the end, Nimue bloodily beheads their leader and saves her people -- it's young Sister Iris (Emily Coates) who delivers a seemingly fatal blow, striking Nimue down as she, Merlin (Gustaf Skarsgård), and Morgana attempt to flee to safety.Nimue, two arrows embedded in her, tumbles over the edge of a bridge into the waters below, as Merlin picks up her sword and, eyes aglow, unleashes his powers.
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