Serendipity is a medical fanatic who will stop at nothing to complete her encyclopedia of medicine. Her latest obsession? Crown Prince Jonathan, who has been afflicted with a legendary and rare poison. She infiltrates the Eastern Palace to treat him, eventually helping him uncover the shocking truth: the Empress Dowager has been the one poisoning him all along.Driven by a need for survival and justice, Jonathan resolves to seize the throne. He strikes a deal with Serendipity: he will serve as her living medical test subject if she can cure him. Caught in a vortex of deadly palace politics, the two support each other through thick and thin, exposing a grand conspiracy while their professional deal blossoms into a deep, soul-stirring love.