Seowon, who has spent his life as an ordinary Beta, suddenly confronts the traumatic shock of discovering he is an Omega sub-gender, which is immediately followed by an urgent Heat Cycle. In a moment of instinctual loss of control, he finds himself spending a night with Yohan, the son of his step-brother. Seowon attempts to suppress the "accident," but Yohan, the younger individual who has always concealed his true emotions, starts to reveal a frightening, simmering obsession. "Uncle, I love you." Can Seowon escape the unbreakable bond created in just one night, or will Yohan's pure and unwavering love ultimately rescue them both?