4400 overlooked, undervalued, or otherwise marginalized people who vanished without a trace over the last hundred years are all returned in an instant, having not aged a day and with no memory of what happened to them. As the government races to analyze the potential threat and contain the story, the 4400 themselves must grapple with the fact that they've been returned with a few "upgrades", and the increasing likelihood that they were all brought back now for a specific reason.
A quarter-life crisis causes a young Chinese-American woman to drop out of college and go on a life-changing journey to an isolated monastery in China. But when she returns to find her hometown overrun with crime and corruption, she uses her martial arts skills and Shaolin values to protect her community and bring criminals to justice...all while searching for the assassin who killed her Shaolin mentor and is now targeting her.