A boy finds a strange object while playing hide-and-seek. His grandfather tells him the story of his own youth, and the important role the old lamp played. This story is about the modernization of Japan and the changes that came with it.

The Agency of Cultural Affairs of Japan invested 214 million yen ($2.26 million) in "Young Animator Training Project" and entrusted the execution of the project to Japan Animation Creators Association (JaniCA). JaniCA produced four original anime (23 min long with OP and ED sequences) in cooperation with four production studios. Ojii-san no Lamp was one of these four projects.