Twenty-two-year-old Beta Yoon Ha-seong struggles as the bassist for an unknown indie band. After a failed performance and being dumped by his girlfriend, he's left in tears when he runs into famous actor Go Ye-han. Ye-han , claiming to be his fan, offers him a job and connects him with a famous composer to learn composition. Ha-seong actively supports him and treats him with affection. Despite feeling a sense of unease, he finds himself drawn to Ye-han. To repay the favor, he helps Ha-seong with his rut, which involves managing his pheromones. "Huh, Ma-an... I'm not even an omega," he says. "Ha-seong, you're overflowing with talent. You'd be better off with me than most omegas." What started as a simple attempt to help him somehow leads to a rut partner. And perhaps he shouldn't have ignored the initial sense of unease. "It's true I wanted to have sex with you. But... is that really that problematic?"