Lina and Gourry was traveling, in order to the substitute for "the Sword of Light", which was lost. But, all rumors about magic-sword are just a fake or an event to revive a village. Lina and Gourry thought we'll be none the worse for it if it fail, and went toward Bezeld following one of such rumors. And, on the way, they two met a girl: Sherra, who is followed by men in black, and Luke and Millina, who go after Sherra.
While beating men in black, Lina and Gourry went toward Bezeld, following the rumor of magic-sword and Sherra. They two caught up with Luke and Millina in the village attacked many Demons. And, Lina and Gourry heard from Millina that many Demons appearing in Bezeld. And, They two heard the rumor that there may be relation between the rumor of magic-sword, Sherra is involved in, and this matter of Demons with unknown cause.
By the way things are going, Lina and Gourry went toward Bezeld with Luke and Millina. One night, Lina wake up by feeling strange sign, and found Sherra followed by men in black. Gourry, Luke, and Millina also rushed to there before long, but a pack of Demons appeared then.
Lina and Gourry went to Solaria, for the rumor that Langmayer, the lord of Solaria, gathering magic-swords. The landlord said some strange institutions were built around the castle lately. Lina and Gourry stole into one of the institutions to get the evidence of lord's plan of the revolt. But, Lina and Gourry found and followed by men in black. By appearance of unidentifiable masked man, men in black retreated. But the masked man also disappeared, so Lina and Gourry couldn't understand the situation.
Next day, Lina and Gourry was invited to dinner by Larvas, the acting lord, and met Luke and Millina, who seem to be hired as lord's guards. On the way from the castle to the inn, Zain, one of men in black Lina and Gourry battled in Bezeld, but Chimeras, which Zain released, went to the street and it became a disturbance.
Larvas, the acting lord, asked Lina and Gourry to help to solve the family trouble, but Lina refused. Lina and Gourry wore masks and stole into the castle. They two found poisoned old man, but was found by Luke and Millina.
The matter of Demons' appearance doesn't seem to quiet down. By Sorcerer Guild of Telmord City, Lina and Gourry was asked to help the suppression of the revolt of Kairas, the president of Crimson Town's Sorcerer Guild. Lina and Gourry went toward Crimson Town with Aria=Ashford, a sorceress who want to rescue her elder sister: Bell.
They three turned away the sorcerer: Zonagein and the lizardman: Graimoa, who attacked Lina and her company. And they three met a sorcerer on the way to Crimson Town: Diral, and he said he also go with Lina and her company. They 4 detoured the main road, where King's Army is, and went down the canal and were attacked by Lesser Demons like fishes or birds.
They 4 escaped by using Bephis Bring, and drifted to underground lake. But, they were attacked by Fish Demons also there. It seems that there's the way to Sorcerer Guild in the underground lake. They 4 began to search the way, but a Chimera: Aileus stood in their way.
Lina was forced the investigation of the matter of Demons' appearance, and went toward Dils Kingdom with Gourry, her partner. On the way, Lina and Gourry witnessed Mazoku, like a strange shaman, kill a man. And, in a village attacked many Demons, villagers witnessed "White Giant" who beat Demons.
During the battle against "Shaman" who came to kill eyewitnesses: Lina and Gourry, Luke and Millina joined. Lina and Gourry heard that Sherra, the Dynast's general, curries favor with Dils' king from the knight: Jade=Cordwel, the client of Luke and Millina. And, Lina and Gourry decided to go to Gyria City with Luke, Millina, and Jade. On the way, they were shut in Mazoku's barrier, and confronted 3 Mazoku. They 5 narrowly draw Mazoku away, and witnessed "White Giant", but they couldn't know what it is.
At last, they 5 arrived at Gyria City, but Jade was forbidden to enter the city by Alss, the general. And, the gatekeeper said Gransis, the general and Jade's father, was dead. They 5 sneaked into Gyria City, and harbored by gatekeeper 1: Myas. In the night, they 5 broke into the castle, but found by Mazoku.
Lina and Gourry heard the porpose of this matter of Demons' appearance may be to reproduce Kouma War, from the doyen of Golden Dragon: Milgasia and an elf: Menfis(=Meffy). And, they 2 decided to cooperate to investigate the matter. In this night, Lina was attacked by 2 Mazoku: Mianzo and Tvelzonarg, but Milgasia and Menfis repeled them. On the way to elf's village, they 4 found a village being attacked by Demons, and beat Demons with Meffy, who turned to "White Giant" by Zenafa-Armor.
The gatekeeper 1: Myas told them 4 that Demons appeared again in Gyria City and the castle was shut. And, Lina, Gourry, Milgasia, and Menfis went toward Gyria City again. Jade, who asked Myas to call Lina and her company back, went to search the castle, not to return.
In the night, They 4 sneaked into the castle, and went toward where people may be Mazoku: Sardian, the trade minister, and Feliarl, the court sorcerer, is. But, on the way, Lina, Gourry, and some soldiers was sealed in the barrier of Mazoku, to devide from Milgasia and Meffy.
In Selentia, the shrine city, the head of priests dead by the fire in the main shrine which deters Flare Dragon God, and the rivalry for the post escalated into the conflict by hiring hoodlums and mercenaries. Lina and Gourry were begged by the head of the city's Sorcerer Guild to deter the conflict. And, they 2 met Luke and Millina, hired as guards by Keres, the head of Aqua Lord's shrine. Considering from the state of burned main shrine, the head seems to had been assassinated by someone.
Then, Blan, the head of Air Lord's shrine, was killed by the assassin hired by someone. Lina and Gourry began to investigate with Luke and Millina who sent to help the investigation, but they 4 was attacked by assassins. In the midst of the battle, Millina was down with the poison on the sword of Zord, the Human Demon also appeared in the matter of Solaria.
Luke was out of control in the rage, and killed Zord and Zaikel, then went toward the Flare Lord's shrine to kill the person hired Zord and Zaikel: Francis, the head of Flare Lord's shrine. In order to check Luke, Lina and Gourry run after him.
----The world was shaken---- By the unidentified phenomenon, Demons got power. And, the matter of Demons' appearance, which must had been settled, happened again. Mazoku like muscular tissue sample, who attacked a city, retreated for some unknown reason after hearing Lina and Gourry's name. Milgazia and Meffy, who came to human's city for their research, said various places are in abnormal weather. They 4 were attacked by Mazoku like dead trees, but it withdrew by muscle-Mazoku's disturbance. Then, Lina saw a person looks just like herself in the crowd.
The Doppelganger invited Lina and her company to Sairaag City. Probably, it's the invite by Mazoku. On the way to Sairaag, they met again Rubia running small flower shop. Lina and Gourry were impressed by the greenhouse. But again, they were attacked by dead-trees-Mazoku, and 3 Mazoku: Buladu, Vaidarzu, and Guon. Muscle-Mazoku disturbed other Mazoku again, but it was killed by dead-trees-Mazoku. By sudden appearance of Xelloss, the Greater Beast's priest, Mazoku withdrew, but Xelloss disappeared without to explain the situation.