Sihoo - Dominant Alpha and the second son of Sangwon Group. As he is about to burn out from following the same routine in his life day after day, he meets Yejun, a music major who bartends at his friend's bar. Yejun gives off the impression of a sweet innocent puppy, and on that snowy night, encountering Yejun's unexpected but warm attention tinged with straightforward confidence, Sihoo finds him interesting enough to approach. While Yejun gets swept away, entranced by the mature charm of an older person, Sihoo uses this impulse of curiosity as a means to escape from his tedious life, thus extending their short meeting. Maybe he has taken the situation too lightly, but soon Sihoo grows flustered as his and Yejun's compatibility increases the longer they continue their relationship... "I'm not the one who ate you up. No, it was you, hyung, who ate mine up real well." Two men, who differ in every aspect - from the backdrop of their lives, to their personalities. Have the tremors of change that will shake up their lives started?