In the time tunnel where science and technology are advancing rapidly, more and more young people in rural areas are involved in the bustling whirlpool of the city for dreams or life pressures. Parents and children who are left alone in a foreign country are haunted by dreams and heartbroken. They just cannot realize the dreams and wonders in the open land where they grew up. Who can guarantee that they will not be as ethereal and distant as a mirage in the city?