Ling Shuang, who was once the daughter of a wealthy family, after her family was destroyed overnight and her father died in an "accident", she hid herself incognito and went overseas. With her extraordinary perseverance and talent, she became the top bodyguard in the world codenamed "Ice Blade". Many years later, in order to investigate the truth behind her father's death, she accepted a special task - to protect Chu Yao, the heir to the Chu family, the top conglomerate in the country.
When they first met, Ling Shuang saw Chu Yao as a playboy who wandered around flowers and had no knowledge or skills; while Chu Yao was full of desire to conquer and constantly provoked this cold and unsophisticated female bodyguard. However, in the successive assassinations and kidnappings, Ling Shuang demonstrated his terrifying professional strength with thunderous means, pulling Chu Yao back from the line of life and death again and again, subverting everyone's understanding of "bodyguards". Chu Yao also gradually shed his disguise during the crisis, revealing his "elite" core as a financial genius and strategist. His "romance" was just a mask for him to protect himself and collect information in the family infighting.
As the investigation deepened, Ling Shuang discovered that the forces chasing Chu Yao were inextricably linked to the man behind the death of her family - a mafia tycoon who lived on revenge. Chu Yao also realized that the danger was not coming for him, but for the "ice blade" around him. The two have transformed from an employment relationship where they were wary of each other to a life-and-death partner who trusts each other. She used force to clear obstacles for him, and he used financial resources and wisdom to pave the way for her revenge. They join forces to fight against the common enemy, causing a storm in the financial market, reshuffling the cards in black and white, and getting closer to the core of the truth step by step. In the end, Ling Shuang took revenge with his own hands.
