A tiny misunderstanding snowballs into a wild adventure in this playful picture book that pokes gentle fun at what's lost in translation between Spanish and English.

When Diego hears Abuela preparing “por si las moscas," in case of the flies, alarm bells go off in his mind and he preps his schoolmates for an epic attack of winged insects. Except. . . some phrases don't translate literally.

What follows is a zany adventure filled with tactical meetings at recess, combat training in gym class, and keeping watch from the highest point of the playground, with illustrations that incorporate English and Spanish, and enough silliness for readers to enjoy in whatever language they speak.