The Mysterious Sunflower Book

Kapri is your typical 23 year old book nerd still trying to find her purpose in life until one day she stumbles upon a mysterious book with a Sunflower on it. She flip open the book to it's first page and a bright light omits from it. She's no longer in America. Where is she? Why are people dressed like this? How did she get here? Better yet, how do she get back home?