Guillermina y Candelario van a jugar un partido de fútbol a la playa y terminan descubriendo muchas cosas interesantes sobre unos inesperados visitantes.

Guillermina and Candelario tell their grandfather how, aboard a submarine, they managed to recover Candelario's lost boat.

Carlos explains the forms of address used to address several conversational partners: "vosotros" and "vosotras," which tend to be used in Spain, and "ustedes," which tends to be used in Central and South America.