In 17th century England, a young doctor named Robert Merivel finds himself caught between court intrigues and the demands of his profession. After an unexpected encounter with King Charles II, who is captivated by Robert's charisma, he becomes a fortunate man, gaining access to the luxuries and pleasures of royalty. Far from being just a doctor, Robert transforms into a favorite of the king, indulging in a life of excess, parties, and romance.
However, Robert's life takes a dramatic turn when his privileged position feels threatened. His affair with a cunning and manipulative woman tests his loyalty and his understanding of true happiness. As he faces the pressures of court and the expectations of the monarch, Robert realizes that he has sacrificed his professional ethics and sense of identity in the pursuit of pleasure. This reflection propels him on a journey of self-discovery, where he must decide between clinging to his superficial life or embracing his vocation as a doctor and changing the course of his life.
As tensions revive old loyalties and reveal dark secrets, Robert is forced to make a difficult decision that will affect not only his future but also that of those he loves, leading him to question what it truly means to restore his life, his career, and his soul.