Sofia the First
Elena and the Secret of Avalor (3x23)
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Elena laments how she was trapped in the magical Amulet of Avalor for forty-one years, until she was set free by a brave young Princess: Sofia The First.
Note: This Episode Takes Place before the Episode called "The Secret Library Part 3: The Tale of the Noble Knight" beause it reveals how Princess Elena was Freed from The Amulet of Avalor and how its color changed from Purple to Pink.