When Sand wakes up trapped inside a castle that has been shattered by a mysterious disaster, he finds everything inside broken in two. Thorny vines seal the castle from the outside world. To survive, Sand must use his blacksmith skills to mend what is broken. His quest becomes even more urgent when he discovers Perrotte, a girl who has been asleep in the castle crypt for centuries. Together, they must repair the castle and uncover the magical secret that caused its destruction to break the curse and escape.