It’s 2028 and Los Angeles is in free fall. The company Clear Water, which owns the privatized water system, has stopped the water supply to the city and riots erupted. The crime is sky-high. At the top-secret private hospital Artemis, the alcoholic nurse Thomas (Jodie Foster) and her medical nano-robots, "nanites," are working to save the lives of injured gangsters. Only members receive care and there are three rules: do not carry weapons, do not offend the staff and do not kill the other patients.