Brief summaries of each major character, including who they are, what they want, the core conflict they'll face, and the transformation they'll undergo. Example:

DON DRAPER is a brilliant, charismatic advertising executive who has built his success on reinvention and emotional distance. He presents confidence and control, but privately wrestles with a fractured identity and a deep sense of emptiness. As his career rises, the gap between who he pretends to be and who he actually is becomes harder to ignore. His story follows a man chasing meaning through work, women, and escape, while never fully outrunning himself.