Madrid, Spain, 2010. While the whole city follows the national team's successful participation in the World Cup, a group of daring thieves look for a way into one of the most secure and guarded places on the planet.

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.

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.

Pablo has it everything in the life: health, money and love. Nevertheless, a necrosis in the hip is going to trigger the loss of everything what that thought had safe. He is going to try to recover his stability at all costs, perhaps but he is too late.