The little protagonist’s parents are medical workers, who went to epidemic area prior to the Spring Festival. The little protagonist watched the news at home every day, hoping to see his mom and dad. From the TV news, the protagonist saw how his parents were working, and also saw the policemen, couriers, uncles at neighborhood committees and volunteers, all of whom were busy in fighting against the epidemic. During the continuous struggle, his father fell ill. The little protagonist missed him very much, and went to the park with his mother to release the paper plane of hope...