The dragon knight Elaine Frost, known as the "Northern Fortress", fought bloody battles to protect the kingdom and won a key victory against the northern barbarians. However, the day of triumph is not the time of coronation of glory, but the beginning of the whirlpool of conspiracy. The king's poisonous wine, the easily pierced dragon scale armor, the sudden accusation of regicide... Everything she was loyal to instantly turned into the icy shackles that imprisoned her.
Deep in the desperate ice prison, Elaine glimpsed the truth behind her father's death in battle, which was also a carefully planned murder. The flame of loyalty was completely extinguished, and the chill of revenge soaked into the bone marrow. At this moment, her blood awakened the ancient existence sealed here - an ancestral dragon soul from the ancient times.