Kim Taehyung, the world's youngest billionaire at 30, is known for his arrogance, power, and charm. When his mother insists on an arranged marriage to Jeon Jungkook-a poor but kind-hearted 20-year-old boy-Taehyung reluctantly agrees, believing the marriage to be just another transaction. But when Jungkook falls pregnant with their child just five months into their rocky marriage, both are forced to confront their feelings and the chains of their pasts.