Princess Maria Luvalle of Surin has lived a life bound by the royal walls: kind, shy, and always ready to extend a helping hand. Yet fate has another path in store for her. In a tumultuous time of war, her father's commands thrust her into the heart of battle, disguised as "Prince Mark." The relentless winds of misfortune sweep her away into captivity, leaving her father's life snuffled out cruelly. As her world shatters, Maria must confront the unimaginable, discovering her own courage and strength in the face of adversity. Embark on an enthralling journey alongside a reluctant warrior princess, where sacrifices are made, heroes are born, and destiny weaves an unpredictable tapestry.

Children started mysteriously disappearing every day in the year 2030 to a place named The Lone Region. The issue appears to be ignored by and unimportant to the government. Su-Mi Eoh, a Korean orphan, lives in a foster home without being aware of the enigmatic power that threatens children her age. Su-Mi fights against all odds to survive after being tricked, brought to Grallo City, and coerced into becoming a soldier. Angel Hunt, an American foreign student studying in Seoul with her older sister Lizzie, is in the meantime. She is put in a group one day with a few other Korean students to take part in an unspecified experiment. After receiving a gift, she gains knowledge in magic, combat, and history as a whole.