After learning that Prince Hugo's big brother, Axel, calls him "Baby Bro", Sofia's friends decide to give each other fun nicknames. Everyone is having fun except for Sofia, whom Amber insists on referring to as "Grape". She doesn't even realize that Sofia's feelings are hurt. Can a lesson from Hugo help the princesses realize that nicknames can hurt? (Hugo's song "Nicknames" is in the same tune as the show's song "Know It All". You should sing the lyrics to "Nicknames" as you listen to "Know It All".)