In a futuristic dystopian/utopian society, human emotions and most illnesses have been eradicated and everyone lives in peace. But when a new disease named S.O.S. surfaces, everything changes for illustrator Silas (Hoult). He becomes an outcast once infected, but is drawn to his writer co-worker Nia (Stewart), who is also infected but hiding her condition. Their secret romance continues to develop, but when a cure to the disease is found, their relationship and their ability to feel emotion is threatened. With the help of other infected citizens, they develop a potential escape plan, but after Nia receives a conception summons their plan begins to unravel. In the end they go through with their escape plan, as it is implied that the cure did not completely eradicate Silas’ feelings for Nia.