Luk, son of His Highness Naruenat and Lady Sri, excels in business but faces social criticism. Khun Kae, failing to find him a wife, turns to Peemarn, who refuses due to his love for Rojarate. To secure the match, Luk offers Rojarate 10 million baht to leave Peemarn and marry him. Initially viewing her as money-driven, he later falls in love.