A group of young boys on the cusp of becoming teenagers embark on an epic quest to fix their broken drone before their parents get home.
Ming Wang is an impoverished Chinese prodigy who flees Communist China to become a pioneering eye surgeon in America. When tasked with restoring the sight of an orphan in India, who was blinded by her stepmother, Wang must confront the trauma of living through the violent uprising in his youth, the Cultural Revolution.
Hundreds of years from now, the last surviving humans discover the means of sending consciousness back through time, directly into people in the 21st century. These "travelers" assume the lives of seemingly random people, while secretly working as teams to perform missions in order to save humanity from a terrible future.
