Bai Su and Yun Jin were both orphans who grew up in an orphanage, but they didn’t have a good relationship with each other. When they were young, Yun Jin stole the only item that could verify Bai Su’s identity, a silver pendant. When she heard that the empire military family’s eldest granddaughter had a silver pendant on her before she went missing, Yun Jin secretly switched the Bai Su’s DNA sample. She wanted to replace Bai Su and become the empire military family’s princess. However, this didn’t stop Bai Su from becoming an excellent international sniper. Her family’s genes seem to have decided everything for her, and that made Yun Jin made with jealousy. Then, Bai Su signed a fake marriage agreement with the empire’s CEO because she saved him. However, Yun Jin didn’t plan on letting Bai Su go. She risked taking Bai Su’s place again, and made the CEO think he had gotten the wrong person. After the CEO and Bai Su had a flash marriage, they quickly divorced due to Yun Jin’s replacement. This news made Bai Su the laughing stock of the city. However, the CEO had fallen deeply for Bai Su before he knew it. He was so in love that he never expected she would one day aim her gun at his heart.