After Sofia helps a little mermaid named Oona, Sofia's amulet grants her the power to transform into a mermaid and visit her new friend's underwater kingdom. But when Cedric (disguised as a seamonster) plots to steal Oona's enchanted Mermaid Comb, danger surfaces for both worlds. With a little help from special guest, Princess Ariel, Sofia embarks on an adventure to rescue Oona and prevent a typhoon before it's too late.

Ariel Winteras Princess Sofia (voice)
Travis Willinghamas King Roland II (voice)
Sara Ramirezas Queen Miranda (voice)
Darcy Rose Byrnesas Princess Amber (voice)
Zach Callisonas Prince James (voice)
Kiernan Shipkaas Princess Oona (voice)
Jodi Bensonas Queen Emmaline / Ariel (voice)
Jess Harnellas Cedric (voice)
Sarah Mitchellas Princess Cora (voice)
Wayne Bradyas Clover (voice)