The Day When I Was Born
The episode begins with Nobita getting yelled at by his mom and dad. Their expectations and reality causes Nobita to believe that he was picked up or adopted. Nobita and Doraemon go back to the past to the day that Nobita was born. Nobita realizes the dreams and aspirations that his parents hold for him and it causes him to study.
Aired 04/07/1979EP 81 - The Day When I Was Born
Doraemon
Nobi Nobita is a 4th-grade boy in Tokyo. One day, a round, blue cat-style robot (minus ears) pops up in his desk drawer. Nobita's great-great-grandson (or something) lives in the 22nd Century, but thanks to Nobita's mistakes, the entire family is living in poverty. To rectify this, Nobita's descendent is sent Doraemon back to the past, to help prevent Nobita from making mistakes. Of course this is a difficult task since Nobita is the weakest and least intelligent child in his class. Doraemon does, however, have a 4-dimensional pocket on his front, which contains cool gadgets from the future. With these toys, Doraemon will try to help Nobita. Unfortunately, Nobita also has the bad habit of misusing Doraemon's gadgets and landing himself in yet more trouble?
(Source: AnimeNfo)