In an attempt to ward off yet another one of Jin Yeong-seo's suitors, Shin Ha-ri goes on a blind date in her best friend's place with the goal of ruining the meeting. Arriving in a thick layer of makeup, a ridiculous pink wig, and a seductive outfit, Ha-ri is prepared to scare the man away so badly that Yeong-seo's father will be forced to stop setting his daughter up on blind dates. However, the handsome young man who appears in front of Ha-ri is none other than Kang Tae-mu, the newly appointed CEO of the company she works at.

Despite Ha-ri's attempts to act as crazy and undesirable as possible, Tae-mu remains indifferent during their date and even proposes to Ha-ri—whom he still believes is Yeong-seo. Caught in a web of deceit, Ha-ri must find a way to reject the oddly persistent Tae-mu or risk being exposed and losing her job. However, the more Tae-mu pursues Ha-ri, the more she begins to question her feelings toward him.

A Business Proposal is an adaptation of Haehwa's Sanae Matseon web novel series. It is originally a webtoon series which was officially published in book format by Yeondam (연담) from December 15, 2020 to September 29, 2022.

The series has been published digitally in English by Tapas from September 11, 2020 to July 19, 2022. The volumes have been published by Yen Press under the Ize Press imprint since May 23, 2023.

A Business Proposal was then adapted into a 12-episode Korean drama series which aired from February 28, 2022 to April 5, 2022.