Lina and Gourry attack a pirate ship (whose captain is like Jack Sparrow) to gain money to search a new sword for Gourry. On the ship a prisoner fish woman reveals to the pirates the bad reputation of the sorceress Meanwhile Amelia, Zelgadis and Wizer Freion ( the inspector of the Ruvina Gaard kingdom) watch them in a ship of the royal navy of Saillune. Amelia orders to her ships the attack and the pirate ship is sunken
Later Amelia and Zelgadiss meet with Lina e Gourry in a local inn and, with great surprise of everyone, Gourry can't remember their names. Amelia introduces Wizer to Lina but the inspector handcuffs the sorceress and says she's under arrest for the crime of being Lina Inverse.Meanwhile the Ruvingardo army surrounds the inn, but Lina sweeps them away easily. The secret weapon of the Ruvina Gaard kingdom is revealed: the Z1 tank, strong and... slow like a turtle.
Amelia reveals that Ruvina Gaard made an official request to Seyruun about finding Lina and the princess was charged with the mission while Prince Philionne hired Zel as her bodyguard.
The inspector reveals that Ruvina Gaard magic tanks have been destroyed one after another, and they are resistant to average magic spells but a Dragon Slave spell could destroy it. From Lina's knowledge of the spell, combined with brutality, lack of consideration and irrationality, Wizer had concluded that the culprit was the sorceress. In her own defense, Lina points to how she wasn’t the one who destroyed the turtle-shaped tank.
Wizer takes them to a castle where they are keeping another (now cow-shaped) mage tank. They have to guard it to clear Lina's name by catching the real criminal, and in fact Pocota comes and destroys the tank. 
Lina, really angry, casts an amplified Dragon Slave, but the creature somehow survives pulling out a Sword of Light (that turns out to be only a replica).
While Lina and Gourry are doing an eating contest, the sorceress is handcuffed by Wizer again (with indestructible handcuffs) and so Gourry wins the contest. The inspector blames Lina of another crime: kidnapping the exotic pets of rich people. To clear her name again and to win the pet owners' redward, Lina and co begin to investigate on the missing pets. They question the townsfolk but they are less than cooperative, then they follow some tracks which leads at a mysterious island.
As they cross the lake in a boat, a giant jellyfish attacks them. Lina flies away but , unable to carry both Gourry and Wizer, throws the swordsman at the beast. Once in the island, Lina leaves Zel and Amelia to fight a bunch of monsters while she enters a tower with Wizer still chained to her. The inspector still claims that was all part of Lina’s plan to conquer the world. Angry, she throws him through a door and finally manages to slip out of the handcuff.
Suddenly, the jellyfish from the lake busts down the wall (with Gourry sitting on its head) and attacks its creator. Gourry and the giant jellyfish became friends at the lake because they are on the same wavelength, and they saved Zel and Amelia on the way over, who are now all sticky with the monsters' saliva. The evil mage says he has the protection of the prince of Ruvinagaard, but Wizers arrest him the same.
Lina can't believe how Wizer tricked them all along. He wasn’t after her, he was just using her to get to the chimera creator because, even as an Inspector, he couldn't arrest him when there's a prince behind him. But Wizer denies all this.