"A veces me cuesta decidirme. Sobre todo porque Delia, la gruñona de mi hermana, siempre me está chinchando... Mamá se ha empeñado en hacer limpieza general en casa. Dice que si no eligo lo que quiero tirar, iella lo hará por mí! Eso sería un desastre! Por suerte, los fósiles vienen al rescate (y más de una vez)" -- Back cover. Sometimes Tom finds it hard to make up his mind, especially when his younger sister pesters him. Now his mother has gotten the bright idea to de-clutter their house and if Tom doesn't decide what he wants to get rid of, she will do it for him! Help arrives just in time!