The Ruswal kingdom is a dangerous place to be after nightfall. Powerful monsters emerge and plague the island, leaving many of the citizens scared to leave their homes when the sun goes down. However, one of the brave few is Arnice, a knight of great skill and power and a member of the order of Curia. Joined by her friend and priestess Lilysse, Arnice sets out on a quest to rid the realm of these dangerous demons. Soon they both discover that fending off foes and eliminating enemies in battle is not the solution to the island's problems. Armed with a variety of weaponry and accompanied by a colorful cast of characters, Arnice takes on the quest of a lifetime in Nights of Azure.