The story follows the unexpected encounter between Mr. Kim Taehyung, the world's biggest business tycoon also the underworld mafia king, and Sana, a pious and modest girl devoted to her faith. Initially, Taehyung didn't plan to fall in love with her, but as their paths crossed, he couldn't resist the pull towards her. Determined to make her his own, Taehyung embarks on a journey to break down the walls between them and win Sana's heart. However, their contrasting worlds and backgrounds pose challenges to their relationship. Will they be able to overcome these obstacles and find happiness together, or will their differences prove too great to bridge? Follow their journey to discover the fate of their love story.