You were asigned to get the mail by your mom from the mailbox and once you got the mail, one peaked your interest, you decided to open it and your eyes widened as you ran back inside and told your mom about the mail

It turns out it's a letter which tellls that the prince named Eric was looking for a partner, so they decided to invite all the girls his age from the kingdom as well as princesses from other kingdoms to a grand ball where he will pick his future wife