Kwon Do Hyuk is a brilliant tech visionary and wealthy CEO who seems to have it all, yet he suffers from persistent insomnia and a deep emotional void. After his business partner betrays him and his father tasks him to save a failing entertainment company, Do Hyuk decides to develop an AI-powered entertainer. His search for the perfect muse leads him to the mysterious indie singer "Soo," who bears an uncanny resemblance to his latest AI creation. In reality, "Soo" is Eun Chae, a woman juggling a call center job by day and a vibrant stage persona by night. After several awkward encounters, Do Hyuk uses her secrets as leverage, forcing her into a three-month contract as his secretary. But neither of them expect the line between professional duty and personal attraction to blur.