This book begins by saying: Grown-ups are children gone bad.
That's exactly what Ernesto, twelve years old and half a life, thinks (do you remember Zero Clouds, Twenty-Three Happiness ?). Friends are always the same, first love is always the same. The mother and father have changed a little, but the most important loss remains the blue eyes 16 and the grandmother's proverbs.
Luckily Martina is there, or at least she was. Because Martina has disappeared, and Ernesto has an almost perfect plan to find her.
Ernesto is so authentic that sometimes we don't like him and he doesn't even like himself. Because he is a little broken and he hasn't found the solution yet, because he faces the wonderful disorder of the adult world and often struggles there, sometimes he stops. Ernesto is all the dreams and adventures that children have, especially those that don't end up as expected (but still well).