When Ari crash lands on Old Earth and pulls a magic sword from its ancient resting place, she becomes the 42nd reincarnation of King Arthur. Merlin awakes to find that, having aged backward over the last 41 Arthurs, he is now - wretchedly - a teenager. Ari may be Merlin's final chance to complete the steps of the cycle: train Arthur; defeat the greatest evil in the universe; and unite all of humankind. No pressure.
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