Malasaña neighborhood, Madrid, Spain, 1976. While political turmoil ravages the streets all over the country, the Olmedo family arrives in the big city and settles into their new apartment. They soon discover that they are not the only ones roaming its corridors.
The mini-project starts with a solemn event that unites the hearts of two characters already familiar to the audience of the original. The main characters are happy, but besides them, at that time, the story unfolded in the lives of other characters, each of whom went through adolescence in his own way and faced unexpected difficulties along the way.
Max is a Jack Russell dog genetically modified for criminal purposes so he is able to talk. Running away from the criminals he's working for, he is wounded, then saved by detective-wannabe Alberto, who is fire and house-hunting. They end up staying with Alberto's sister-in-law Marta and her two children. Thanks to them all, Alberto finally manages to be a detective, and he and Max establish their detective agency: Sabuesos.
