November 20th is World Children's Day, established by the United Nations. In this colorful world, everyone is like a unique pair of socks with different colors and patterns. On this day, sea babies wear crazy and interesting socks with different styles, boldly showing off their personalities. Setting aside conventions, they become very "sock packed" sea babies, exploring the infinite possibilities of life. In order to listen to various voices, sea babies participate in the "Open Wheat" activity in the school hall, either expressing their own feelings or mocking their "uniqueness".