They grew up circling each other - heirs to two powerful empires, bound by legacy and a shared history that soured into silence. Years ago, one overheard sentence shattered everything between Oh Yiyoung and Goo Dowon. She left the country without looking back. He never reached out. Now, their families demand unity. An arranged marriage forged not out of affection, but obligation. Cold glances. Carefully rehearsed smiles. Press conferences and power games. But buried beneath the bitterness is something unresolved. A memory of warmth. A confession never heard in full. As the world watches their picture-perfect union unfold, Yiyoung and Dowon must confront what was left unsaid - and what still lingers between them. Because some people you hate... You only hate because you once loved them.