Sofia strives to become the first princess to earn a spot on her school's flying derby team. Although paired with the overly-anxious horse Minimus, Sofia learns to believe in herself and proves that a princess can do anything she sets her mind to.

Sofia befriends the trolls that live in the cave near her new home but trouble ensues when her father can't let go of his fear of their banging, even when she brings them to the castle.