After enduring ten lifetimes of reincarnation, Shen Yan possesses the memories of a hundred lifetimes and extraordinary talents. However, an accidental childhood injury leaves him mentally impaired, and he enters into a ten-year engagement with Princess Su Qingyuan. When the ten-year period ends, Su Qingyuan sets out to find the mysterious mastermind behind the business world. Along the way, she rescues Shen Yan from danger and discovers the formidable strength he has been concealing. Shen Yan subsequently uses his extraordinary abilities to humiliate his opponents. At a talent recruitment gathering, he defeats his cousin with a series of inventions far ahead of their time, prompting the princess to recognize him as the mysterious business mastermind. Meanwhile, the late emperor passes away, and the chancellor seizes control of the court, leaving the imperial jade seal in the princess's custody. Using their engagement to bind Shen Yan to her, the princess reveals her true identity as a woman and sincerely asks for his help. Shen Yan ultimately agrees, resolving to stand against the powerful minister.