María Alonso

Arturo, a successful restaurateur, is having an affair with his kitchen assistant Cristal. When he doesn't keep his promise of leaving his wife Paz, Cristal plots to seduce his sweet, simple son Arturito in retaliation.

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.