To prevent her stepmother from seizing control of the Sullivan Group, Chairman Yvette must secure the 10% company shares left by her grandfather for her future husband. She plans to pick a random candidate for a marriage of convenience, but after discovering a traitor among the suitors, she rejects them all. Instead, she marries the handsomest and poorest man she found at the city hall—Ethan. Soon, Yvette finds him not only diagnosing her poisoning effortlessly, but also nourishing her with rare herbs as if they were ordinary. She wonders, "Ethan claimed to have nothing, but why is everyone secretly calling him 'young master'?"
