Wer einmal lügt, dem glaubt man nicht.

Lucy likes to tell monster stories. She's told so many that her friends and her family are sick of it. Then one day, Lucy discovers a real, live monster: the librarian in charge of the summer reading program. Too bad Lucy's told so many monster tall tales. Too bad no one believes a word she says. Too bad the monster knows who she is... and is coming after her next.