Heejae is known as the conglomerate prince. He is part of the Jinhwa group, founded and controlled by his family, the Yeon family. His elder brother, Heekyum, is a chairman, and Heejae is a board member. For most people in Heejae's position, this would afford him all manner of luxuries. However, while he does have the title and the money, he isn't nearly as well-off as one would assume he should be as a person of his standing, living in a studio apartment and being left out of most significant decisions regarding the company. But Heejae doesn't care all that much, just happy to live his life the way he wants… as much as he can under his brother's thumb, that is.
Unfortunately, Heejae isn't the brightest bulb in the box, and when his closest friend and secretary, Haeju, mentions a chance to get back at Heekyum by embezzling one million won, Heejae is more than happy to go along with it. Unfortunately, they don't consider the bag with their contract and ledger, all with the evidence of their embezzlement inside accidentally getting swapped with someone else's on public transportation. Thankfully, the bag was taken by a regular guy, Taekyung, who would probably have no idea what he had.
Paranoid and desperate to keep himself safe, Heejae decides to tail Taekyung, but when he is inevitably caught, his only excuse is that he is attracted to Taekyung. Thankfully, Taekyung is happy to go along with Heejae's whims and to keep Taekyung close, Heejae asks him to move in with him. With Taekyung agreeing, Heejae assumes everything is in his control. Unfortunately, he doesn't anticipate Taekyung wanting to consummate their new relationship, and if Heejae wants to stay under the radar, he will have to go along with everything. Everything.