Lucas, the prince of the large nation Wisteria, and Flora, the princess of the small nation Firentia, have gotten married for a political alliance. After exchanging a promise as kids to get married when they'd grown up, Flora is finally married to Lucas and, on their wedding night, finds herself at the mercy of Lucas's sweet, passionate kisses and caresses. As the couple's love for each other continues to grow, suspicious events start happening around them, putting Flora's life in danger. Not only that, but Lucas appears to be hiding something from her. Flora's marriage contains a huge secret surrounding her sweet, gentlemanly prince...!