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. After their encounter, can they carry out their duties when they lost the desire to do so?