Librería Samer Atenea
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Two young boys have to stay with their grandparents for a while. Grandpa is an eccentric inventor of gadgets and grandma cooks the most disgusting food. The boys go through a number of adventures during their stay which are very funny but also serious.