Maya's best friend, Sarah, doesn't share the same enthusiasm for turning twelve. She's content being eleven, and she finds Maya's constant yearning for twelve annoying. One day, they find a magical wishing necklace that promises to grant their biggest wishes. Maya, of course, wishes to be twelve, but Sarah wishes to be an eleven-year-old in a world where everyone is twelve.
The necklace grants their wishes, and suddenly, Maya is twelve years old but surrounded by people who are still eleven. The world feels strange, and everyone is acting immature and childish. Sarah, on the other hand, is stuck in a world where she's the only eleven-year-old, and everyone treats her like a baby.
They realize their wishes were a mistake and desperately want to reverse them. The necklace, however, has disappeared. Maya and Sarah must work together to find the necklace and undo their wishes, learning valuable lessons about friendship, growing up, and appreciating the age they are in.
The book explores the themes of friendship, growing up, and the pressure of expectations. It emphasizes the importance of appreciating the present moment and recognizing that age is just a number, not a definition of who you are.