Fourth-grader Ayumu Fujino regularly draws four-panel manga for her school newspaper and is lauded as having the best artwork in her class. One day, she is asked by her teacher to turn over one of her manga slots in the school newspaper to a truant student named Kyomoto. When Kyomoto's manga pops up alongside Fujino's, it receives high praises for its detailed artwork, making Fujino furiously jealous. Refusing to be beaten by someone who barely attends school, Fujino devotes herself to learning to create manga. As time goes on though, her goal of outshining Kyomoto seems to only get further and further away, and Fujino, now in sixth grade, eventually gives up and quits making manga. Graduation day arrives, and Fujino is asked to deliver Kyomoto's graduation certificate to her. Through chance, the two end up coming face to face, and their unexpected meeting will end up having consequences far beyond what either of them could ever predict.

In 2015 A.D., Dr. Yamanoue, the Secretary of the Science Ministry, who devotes himself assembles the Android robot on an artificial island. He intends to live together with him as his own son. But the robot has a deficiency in his electric brain. He comes to the conclusion that Dr. Kawashimo's help is essential to correct his defective rain. Although they are friends, they are rivals not only in private life but also in scientific study. Dr. Yamanoue is very jingoistic and only thinks of the robot as one of his strategic arms. On the contrary, Dr. Kawashimo is a pacifist and devotes his affection to robots. Dr. Kawashimo hurries to the island on request of Dr. Yamanoue, taking his pretty young daughter Miri with him. Arriving on the island, Dr. Kawashimo sets the electric brain into Jet Mars, a robot boy. Thus Mars comes into the world. Everything is new to Mars and he doesn't know what is good or bad. On the next day he lifts Dr. Kawashimo and Miri up onto the building. When he sees a glint of moisture in Miri's eyes, he has a mysterious feeling in his mind. Then he asks Dr. Yamanoue what it is. He is taught that it is a tear a weak girl sheds, but, a strong man never does. One day, the electric brain of Fainton, another robot, is put out of order. So Fainton goes-on a wild rampage and the island is plunged into a crisis. When the seawater runs into the facilities from the big hole made by Fainton, only Mars stands in amazement and is quite at a loss what to do just then Miri exhibits her ultra ability and covers the big hole. Led by her, Mars also carries a sheet of iron and makes repairs. At last they rescue Dr. Yamanoue and Dr. Kawashimo from being washed by seawater. Miri is the robot made by Dr. Kawashimo. Mars learns how to cry and learns how to perform a kind deed.

Satomi Maiya's graduate work at the Tokyo University of the Arts, Graduate School of Film and New Media, Department of Animation. A mother secretly threw a letter written by her daughter into the snow-covered ocean. The suspicious daughter follows her mother by sneaking on a rowboat with her.

Not wanting to lose, Yi-rang orchestrates a collapse in the middle of a relay race even though she's on the verge of giving up her dream of becoming an athlete. At the same time, Soo-min transfers in from Seoul and Cheol-soo, who dreams of becoming a scientist, come into her life. They are all immature but they are in the midst of youthful aspiration. With this warm-hearted animation, Han Hye-jin-I and Ahn Jae-hoon encourage Yi-rang's dreams and portray the fantasy and flutter of adolescence through encounters with good people. Set in the '80s and '90s, an old umbrella and a railroad crossing the downtown in the film is the stuff that reminds us of our lost past, evoking a reminiscence in the audience of that which is vanished. It is a way of evoking the real "dreams" that we have lost in this modern society where a rapid capitalization is progressing.