Ten-year-old Anina Yatay Salas does not like her name; each part is a palindrome, which means it reads the same way forwards and backwards. Anina’s schoolmates love to tease her about it, until one day Anina can’t take it anymore and gets into a fight during recess with her archenemy, Yisel. Their punishment is rather unusual: the principal gives each of them a sealed black envelope and instructs them not to open it until they return to see her in seven days. The mystery of its contents will eat away at Anina and get her into all sorts of trouble.
