舅舅說外公再也不會回家了，小男孩猜外公一定住在夜空裡。男孩請月亮、星星替他傳遞思念，要將圖畫和影片寄到天上給外公。透過小男孩的一舉一動，大人也學習面對思念與悲傷。A boy's uncle said that his grandfather was never going to come home again. The boy guessed that his grandfather must be living in the night sky. The boy asked the moon and stars to tell his grandfather that he missed him, and he wanted to mail his pictures and videos to his grandfather in the sky. Through the boy's every move, adults could learn to face the sadness arising from missing someone.