You can try one of the following...

• Once upon a time, in a land far away, there lived a king and a queen, who...
• Long ago, in a tavern full of orcs and burglars...
• There was a time where a princess with her cat named Logan...

...or try already pre-generated ones!

• The princess and her cats
• A boy called Midudev
• The pirate and his parrot