A young knight returns to England to discover that King Richard the Lionheart has been replaced by the tyrannical Prince John, while Lady Rowena, his true love, is engaged to another man.
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.
One spring, Mole decides that he can ignore the spring cleaning for a little longer, and begins a series of adventures with his new friend Rat. They go for a picnic on the riverbank, on a caravan expedition with Toad, until Toad switches allegiance to his new car and his reckless driving makes Mole and Rat search out Badger for help in curbing Toad's profligate habits. But Toad gets away from them and gets a 20-year sentence from the magistrate for theft, reckless driving, and Gross Impertinence. While Toad works his wiles on the jailer's daughter and escapes jail dressed as a washer woman, Badger tries to guard Toad Hall from the machinations of the Weasels and is badly beaten. And it requires a plan of attack and all four comrades to regain Toad Hall.
Set in the storybook world of Enchancia, the music-filled movie follows Sofia, an average girl whose life suddenly changes when her mother marries the king and she is whisked off to live in a castle with her mom, new step-father, King Roland II, and step-siblings, Amber and James. Along the way this ordinary girl learns to navigate the extraordinary life of royalty, and in the process makes everyone around her feel special.