Season 4 Episodes26
Cast1

Ariel Winter
Princess Sofia (voice)
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Ranked #25 of 26 in Season 4•−0.7 vs season avg
Sofia and Chrysta go undercover as fairies to stop a thief from stealing a magical Pixie Cup flower.

Ariel Winter
Princess Sofia (voice)
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"The Mystic Isles: Undercover Fairies" is episode 20 of Sofia the First season 4. It scored 7.3/10 from 44 votes, ranking #25 of 26 episodes this season (season average 8.0). It aired on December 1, 2017.