It’s a world in only black and white. A boy knew about the existence of colourfulness through books. The next day, he got a magic seed. The surprised boy tried to grow things out of the seed by taking really good care of it. However, a long time has passed and nothing happens. He decided it was time to give up. He put the pot into storage room and left. The seed, however, grows secretly in the pot. One day, the boy go to the storage room and accidentally dropped the pot. At last, a little girl got a seed, too.