Berta is a six-year-old girl who lives with her mother and her little brother, a one-and-a-half-year-old toddler who can neither walk nor talk yet, and whom she always calls Mocos.
On the first day of the new school year, Berta discovers Pipo in the backyard, an alien who has fallen from the sky. Berta decides to welcome him into her room, unaware that Pipo is very different from her: noisy, messy… and with an insatiable appetite that makes him eat almost anything. But besides his enormous hunger, Pipo also has many other secrets.
As Pipo becomes part of the family, he discovers with surprise and curiosity all the habits of humans: from brushing teeth to peeling oranges. Berta’s everyday world quickly turns into the stage for a continuous adventure: what will Pipo get up to today?
