Cassian, the "Mad Prince," has feigned insanity for a decade while imprisoned in the Black Bell Tower—a ruse essential for his survival. Everything changes with the arrival of Elara, a handmaiden bearing a mysterious silver swallow hairpin; together, they uncover a regicide plot concealed for ten years within the tower’s hidden gear mechanisms. One seeks to reclaim a usurped throne, while the other aims to clear her executed father’s name of treason. Amidst the Empress’s relentless pursuit, the blizzards of the North, and the inferno consuming the Black Bell Tower, they join forces to unearth the truth—transforming a relationship born of mutual exploitation into an unbreakable bond of life-and-death devotion. Only when the Black Bell—silent for a decade—rings out once more does the entire kingdom finally hear the buried truth.
