Premise: Disney has featured many princesses in its TV shows and movies through the years -- but never a little girl princess. Until now. This animated series features Sofia, an ordinary girl who becomes a princess overnight when her mom marries the king. The adventurous young girl, first introduced in the 2012 TV movie ``Sofia the First: Once Upon a Princess,'' must learn how to adjust to royal life. Offering Sofia words of wisdom are classic princesses -- including Ariel, Belle and Jasmine -- who make special appearances as they help advise the youngster during her transition to royalty. Throughout her journey, Sofia learns that it isn't having a title that imparts royal demeanor; it's that having the characteristics of honesty, loyalty, compassion and grace make one worthy of the role.
Sofia visits her secret library and learns the tale of the Noble Knight seeking the Ice Fire Shield.