Set in the Victorian age in the fictional city of Anargal, we follow Arthur Artorias, a man stripped of his past, tortured, and forced to escape into isolation. Thought to be dead, he returns eight years later a changed man, disfigured, seeking answers and pursuing revenge.
A duty is a commitment and expectation to perform some action in general or when certain circumstances arise. Arthur's duties to steal and kill are created by a need to survive from his scars. The Maiden of Grayfern's duties to agree to an arranged marriage are created by a system of socialite culture. One faithful day, the tasks of their duties enable them to meet each other.