Anna and Sadie have always been best friends so when Sadie suddenly starts being mean, Anna is very sad and seeks support from her dog Banana and classmate Isabel, as well as advice from her brother Chuck and her parents.
Anna has looked forward to her class field trip to the zoo, but from the time they board the bus she is pulled between her long-time best friend, Sadie, and new best friend, Isabel, who argue about everything and want Anna to take sides.
"Anna and Sadie are excited to sleepover at Isabel's for the first time, but when a game of Truth or Dare goes wrong, they're left with a horrible secret"--