Claudina is a traditional woman from the countryside. After the pass away of her husband, she gets into a lonely routine. Having a difficult economic situation, Claudina has to move with her dearest grandson Cristóbal, and her dau...

为了搞清楚养老院是否在虐待老人，年过八旬的素人赛尔吉奥大爷被侦探公司聘请，住进了养老院。在三个月的行动中，赛大爷不仅掌握了高超的卧底技巧，还俘获了院里众多奶奶的芳心，成为了养老院的大明星。随着调查的深入，他发现事件远远没有当初外人设想的那么简单。在《名侦探赛大爷》中，导演巧借外来者赛尔吉奥的视角，暗中观察养老院中老人们的生活日常，并探究他们看似奇怪举止背后的辛酸故事。