There's a crazy dog at Sungwoon Publishing Company. It has an expressionless face, a monotone voice, cold and dark eyes, and a difficult personality. Its name is Woojoon Seo. But is this man really crazy? Taeryung is exhausted from love, work, and even her her own family. To the tired Taeryung, Woojoon's gentle and tender actions seem more like of a loveable pet than of a crazy dog. She doesn't know what to make of him! At times, he seems like a loyal doberman and others, a cute maltese. What's a girl to do?