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 secret underwater kingdom. But when Cedric 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.
Disney DVD DVD.
Friendship -- Fiction.
Mermaids -- Fiction.
Princesses -- Fiction.
Children's television programs.
Gunn, Tim, voice actor.
Mitchell, Jamie (Animated television director), television director.
Ramirez, Sara, voice actor.
Walt Disney Studios Home Entertainment (Firm), publisher.
Winter, Ariel, 1998- voice actor.