When fifth grade teacher Kimberly Wayland finds a human heart in the middle-school dumpster, she has some explaining to do. With the help of her friendsNhot "best friend" Becca, co-worker "lesbian wanna-be" Annie, and lawyer "stickler-for-rules" LucyNKim sets out to solve the mystery of the missing heart. Along the way, she unexpectedly solves another mystery, the mystery of her own heart.