Eri is the youngest member of VINKS, a newly debuted idol group. Despite being a talented professional who earns the pride of his bandmates, he resents any implication that his success is merely a byproduct of him being an alpha. His exceptional dancing skills catch the attention of a renowned producer, who offers him the chance to participate in a joint dance session with Lee Soo-young, a member of the all-alpha top idol group α-code. The song they are to perform, Destined Love, is a nostalgic hit that previously sparked a widespread craze over fated mates and destined couples.

During their first rehearsal, Eri is thrown off balance when he catches a sweet, alluring scent emanating from Soo-young, a fragrance that stirs unexpected feelings in him. Before he can fully comprehend his actions, he loses control and bites Soo-young on the nape of the neck. In the omegaverse world where people are classified as alpha, beta, or omega, this act is a marking that bonds an omega to an alpha. Soo-young is forced to confess his carefully guarded secret: despite presenting as an alpha to the public, he is actually an omega. The bond created by the bite means they are now tied together; only Eri can break it, but doing so would prevent Soo-young from ever bonding with another alpha again.

With only one month remaining until α-code’s major comeback, the pair make an agreement to remain bonded temporarily until after their performance, at which point Eri will sever the connection. They move in together under the pretense of improving their dance routine, but as they train and live alongside one another, genuine feelings begin to develop between them. However, just before their scheduled stage, the performance is abruptly canceled, and they are ordered to separate immediately. Eri is devastated, realizing his emotions have grown far beyond their initial arrangement, while Soo-young seems resigned to accept their imposed separation. The story follows whether Eri can defy the pressures of the entertainment industry and fight for a relationship that was triggered by fate but has become something more, and whether Soo-young will choose his own happiness over the expectations placed upon him.