A dog trainer, Petra Šatopletová, was contacted by a man concerned his parents were being led by their dogs rather than the other way around. The parents, Jindřiška and Jiří, retired physicists, acknowledged the dynamic but felt no change was needed as their dogs aged. Šatopletová then focused on maintaining the dogs, Vilík and Vitality, in good mental condition. The couple and trainer embarked on experiments to achieve this goal. The focus shifted to cognitive stimulation for the aging canine companions. The experiment explores the relationship between owners and their dogs in later life.