Ezma leads the Meldacio Hunters from their base east of the Vesperpool, and the hunter Dave is her son. She initially worked alongside her sister Kimya, but differences in opinion led to them falling out, and Kimya was banished to Malmalam Thicket. Ezma never mentioned Kimya in front of her son, and instead refers to her as "a witch".
Ezma came to possess the key which unlocks the eight sealed doors, each holding an evil behind them. She refuses to ask even the most seasoned hunters to take the task and waits for the one she believes capable of fulfilling this task. Thirty years ago she met Regis, whom she requested to take down the beasts. However, given the nature of his journey and Insomnia fighting Niflheim, Regis was unable to, but promised to once the war would be over. The promise was thought lost when Insomnia fell.
Ezma meets Noctis and keeps a close eye on him throughout his journey until she believes he is ready to embark the task his father left behind. She requests Noctis take on the task and warns him not to take it lightly. Each door is weakening and would eventually break, resulting in the monsters being released if Noctis does not embark on this task.
When Noctis completes the task, Ezma reveals she met Regis who promised to handle the monsters when the war was over. Noctis ended up fulfilling this promise when the war was indeed over, albeit with Niflheim's victory, not Insomnia's.
When the sun sets for the final time, Ezma is heard on the radio where she encourages people to enlist as hunters. When the announcer is concerned enlisters would be in danger, she explains new hunters are always be accompanied by seasoned hunters and would start small until they were ready to handle bigger tasks.