In the wake of the death of Fortna's princess-priestess, Prince Azure purchases a young woman from the slums who shares her most defining feature. He sets out to turn her into a convincing impostor to cover up the death of his half-sister.

After sneaking out of her quarters, Nina runs into First Prince Muhulum, who is also out and about where he's not supposed to be. As the castle prepares to celebrate the Festival of Stars, Nina considers sneaking back into the city.

When it becomes apparent that Azure's life is in danger, Nina escapes the castle to seek help from the former king. However, the former king's wisdom and cleverness quickly puts Nina in danger.

As Nina and Azure's feelings for one another deepen, Nina becomes desperate to find a way to protect him from whoever is targeting him. She's given the opportunity in a one on one meeting with the king.