Leonel grows up in the United States, believing that Roberto is his biological father, and although he is unsure of his origins, and doesn't speak Spanish, he constantly has nightmares involving the border with Mexico, and a woman he cannot remember. But he continues on and doesn't ask himself many questions. His life is good, he has an excellent relationship with his parents, ...。作为一名老教授,他始终情系家乡,退休后放弃优越的城市生活,却在贵州老家的一个小山村驻足,义务支教很多年……他与退休教师的老伴共同开启一扇窗,让那里的孩子和乡亲们开启了智慧之窗,引领他们认知、发现新的世界……。