Final Fantasy 12 is set in the world of Ivalice. For years the two kingdoms of Arcadia and Rosaria have been fighting against each other in a bitter struggle. Located in a strategically important corridor between the two powers is the small kingdom of Dalmaska.
Arcadia's invasion of the kingdom prompts its princess Ashe to join forces with the resistance. Vaan is an optimistic and bright young man yielding from the ancient kingdom of Dalmaska, which has fallen under the control of the Arcardian Empire. Due to the unsatisfactory conditions there, he has cut his ties with relatives there, seeking his very own personal freedom.
As an adventurer, he dreams of being able to command an airship someday. Ashe is the sole daughter of the king of Dalmaska and hence the next inline to the throne. Following the invasion of her country, she becomes the leader of the resistance against the Empire. During a wild pursuit, she loses one companion after the other. Despite her desperate situation, she still hasn't lost the pride of a princess. In this situation she meets Vaan, and before long loses her heart to him. Thus their joint adventure begins