Almost-13-year-old Clare has got a wry sense of humor, two wacky parents, and an imaginary friend named Elsa who is just as real to Clare as her non-imaginary friend Paul. But becoming a teen is a big deal, and Clare wants to pack away the remnants of her childhood. Even though she doesn’t really want to do it, Clare decides it’s time to say goodbye to Elsa. But Elsa isn’t quite ready to leave... at least not completely!