The war of many long years has ended, and peace is gradually returning to the continent of Verbist. Toru, a former saboteur who has given up on his life goals and now leads a self-indulgent existence, lives an almost nomadic life with his younger sister.

After escaping Count Abarth's attack and procuring the "important thing," the trio escapes into the night. On the outskirts of town, they encounter a force led by a cavalier from the kingdom of Wiemac, Alberic Gillette of the Kliemann Organization.

Chaika and company ride in a horse-drawn cart to the city of Ipsom, where a mysterious boy calling himself Chaika's informant appears out of nowhere. Toru is suspicious of the boy's sudden appearance and strange smile, but he tells the party how they can acquire a vehicle and where they can find their next target, the hero Dominica Scoda, and then vanishes. Meanwhile, Gillette's team has arrived in the city in pursuit of Chaika...

Fredrica has joined Chaika and her friends, making them a party of four as they continue their journey in search of their next target. Suddenly they're attacked by three mysterious strangers. Among them is a girl wielding a snake blade who turns out to be... Chaika?!

Fredrica has joined Chaika and her friends, making them a party of four as they continue their journey in search of their next target. Suddenly they're attacked by three mysterious strangers. Among them is a girl wielding a snake blade who turns out to be...

Continuing their journey to gather the emperor's remains, Chaika and company search for the next of the eight heroes, the wizard Simon Scania. Their search brings them to the town of Rademio, where Simon was last seen four years ago. The people of the town tell them about a "Valley of No Return" filled with thick fog, from which no visitors ever return.

"This land belongs to the Neo Gaz Empire. You'll have to pay a toll." A mysterious bunch professing to work for the restoration of the Gaz Empire impedes Chaika and company's path. Among them is a girl in a yellow dress whom the others call "Princess Chaika." Akari's quick wit takes the party in under cover as a band of traveling performers, but Chaika takes a profound interest in these people from the Gaz Empire of days long past...

The town is bustling as the end of war anniversary festival is in full swing. Vivi is thrilled to have a chance to shop alone with Gillette as their team passes through on their way to stop civil disputes to the north. Meanwhile, Chaika and company are shopping for magic fuel, but all the shops are low or sold out.

Arriving at Iveco, Toru realizes that something is strange about town: there are no young girls. There is also a uprising lack of magic fuel given that this region is famous for its mines of magic fuel. They learn from a shopkeeper that Duke Gavarni has been using all of the town's magic fuel to power the floating fortress Soara and that his soldiers are kidnapping the town's girls and taking them to his fortress where they are never seen again.

Vivi and Zuita rescue Toru and the three of them agree to work together to find the others and escape the Soara. Elsewhere, Layla leads Chaika to a room where she reveals that she knows who Chaika is. As they search the fortress, Toru, Vivi and Zuita learn the horrible truth of what happened to the girls captured by the Duke's men.

The commander of the Stratus is unfazed by Alberic's pleas for time and orders the Stratus to fire on the Soara. As the Soara and Stratus fire at each other, Zuita is able to free Akari from Grad's mind control. The continued battle between the sky fortresses has severely damaged the Stratus and caused the Soara's cannon to misfire, with Alberic and the unfortunate ground forces of the Alliance caught in the misaimed blast.