CIA officer Carrie Mathison is tops in her field despite being bipolar, which makes her volatile and unpredictable. With the help of her long-time mentor Saul Berenson, Carrie fearlessly risks everything, including her personal well-being and even sanity, at every turn.
Carrie Mathison's body is healing, but her memory remains fractured. While trying to broker peace with the Taliban in Afghanistan, Saul is dependent on his protégé's expertise. Against medical advice, Saul asks Carrie to assist him one last time.