Financial reporter Shen Xia, in order to investigate the car accident suspicion of her parents (who used to work for Huo Corporation) and the leak of Huo Corporation's "Aurora Project", sneaked into the reception to investigate, and unexpectedly confronted Huo Mingyuan, the president of Huo Corporation. At that time, Huo Mingyuan was being forced into marriage by his family. In order to break the situation, he proposed a "three-month contract marriage" to Shen Xia - he would help her investigate the case, and she would help him block the marriage.
Under the contract, Shen Xia went deep into the Huo family as an assistant, and gradually discovered the connection between the death of his father and technology leaks; Huo Mingyuan also discovered the black deal between his father Huo Zhenting and his rival Xingtu from his mother's old belongings. The two went from being wary of each other to investigating cases side by side, their tacit understanding of analyzing evidence late at night, and their sacrifice to protect each other in times of crisis, making the false engagement gradually become true.
In order to seize power, Huo Mingyuan's estranged brother Huo Mingzhe not only leaked technology and snatched evidence, but was also involved in a car accident that year; Huo Zhenting's murderous crime was also gradually exposed. Finally, at the Xingtu new product launch conference, the two teamed up to expose the shady story. Huo Mingzhe was brought to justice, Huo Zhenting surrendered, and the unjust case of Shen Xia's parents was cleared up.
This encounter that started as a transaction ended up being mutual redemption. On the terrace, Huo Mingyuan proposed with a simple diamond ring. The fog cleared and the truth was revealed, and the two of them moved from "contract" to eternal love.