Miguel and Lucía are two children spending the afternoon in the village as usual, playing and annoying the neighbors, but their daily routine is interrupted by the arrival of a new, unknown visitor.
The children try to discover who this visitor is by playing spy games as they follow him around the town, but Miguel is convinced he's hiding something. In the middle of their investigation, the stranger arrives at Lucía's house, and there they realize this stranger is their father, whom they've never met.