Ramona is having her best friend, Gracie, to stay the night. It’s their first ever sleepover and she wants to make a den, read stories, dance like a wild thing, stay up all night and have a midnight feast. It'll be the best sleepover in history. But nothing quite goes to plan. Will Gracie, Ramona and her little sister, Ruby, be able to solve their problems and still be friends in the morning?