Lina Inverse as herself, is the most under developed kid in Zelas High School. She's also greedy, hot-tempered, and always hungry. Gourry Gabriev is the popular all brawn but no brain jock. Prom is near and Gourry is faced with a problem... his overdeveloped girlfriend, the most idolized girl in school, Nahga just broke up with him to be with Zelgadiss Greywords, the oh so famous and still a jerk celebrity. That's when he bets his mate, Xelloss Metalium that he can turn hot tempered, greedy, underdeveloped Lina into a perfect laydee and into the prom queen in 5 weeks.
To turn Lina into a different Lina is a hard task. So, one day Gourry surprised Lina by showing up at the place she usually hangs out to eat. He began took interest in eating as he wanted them to have at least one thing in common. To his surprise and Lina's.... He loved the experience! He asked Lina for a date but Lina had him in a headlock and ask him what the hell did he wants because he doesn't even speak to her at school except when he's teasing about her chest. Gourry sheepishly answered that he wanted to feel what her life was like, unpopular and all. Lina chokes Gourry even tighter until he turns blue. Gourry apologizes. That's how their first date went.
The next day, Gourry went over Lina's house and practically dragged her out. He invited her over to the beach. Lina angrily answered that she doesn't want to be with him as she was busy. Gourry smelled Lina's fresh cooked chicken soup and invited himself in the kitchen. Lina tried to pull him out the house but Gourry was drooling over the food. This causes a few problems. Lina then asked Gourry how did he get into her house. Gourry said that a tall woman opened the door but he couldn't see her face. Lina turned pale as she trembled, 'She's...she's... home already?'.... Gourry asked who but Lina already pulled Gourry out of the house drove both of them in his car to the beach.
At the beach Gourry's friend, Zangulus invited them over to a party at his house tonight. Lina said firmly to Gourry, no she's not going. Gourry pleaded her. Lina said no, she had better things to do like, eating. That evening, Gourry showed up unexpectedly at Lina's house with his sister, Ameria Wil Telsa Saillune. Lina began to feel 5 inches taller as this younger kid has boobs. Ameria performed a make over on Lina. Ameria ordered Lina to stuff her bra with tissues, trimmed Lina's hair, make up Lina, and teaches her the way to be a laydee, and gave Lina a dress to wear. Gourry was shocked and was grinning from head to toe as he saw the new Lina Inverse.
At Zangulus's party, Nahga and Zelgadiss crashed the party much to the surprise of everyone. Zelgadiss, who was drunk, began to go crazy, as he dirty dancing on the floor as Nahga disgustingly watched. Xelloss congratulated Gourry for the fine job he did... but will it last till the prom? Lina has very short patience. When Nahga saw the new Lina Inverse with her ex, she stormed over to Lina and purposely poured her drink over to Lina's cleavage. Lina got mad and started Dragu Slave Nahga. Nahga flew through the walls. Then suddenly everyone laughed. Horrors! The tissues in Lina's push up bra were soaked and dripping with Nahga's drink. Lina's 'breasts' began swelling down. Lina went mad and Dragu Slave everyone in the room. Then Lina ran outside not in tears but with vengeance. Gourry followed behind. Lina shouted to Gourry why the hell did he force her to come. Gourry denied it. He didn't force her he asked her and Lina came by her own will. Lina said that's not the point and elbowed him on the head.
For weeks Lina suddenly... transformed into a nicer, sweeter, mature looking Lina. And she and Gourry were sort of an item. That is until suddenly news spread out that Zelgadiss had broken up with Nahga in search for a better, bustier woman. Nahga killed Zelgadiss with her laughter of I don't really care if you dumped me coz I am going to find a date for the prom.
Fast forward to a scene where the prom committee is meeting. Xelloss 'accidentally' blurt out to Lina that she's just a bet. Lina fiercely asked Gourry if this is true and as Gourry would answer.... Yes. Nahga crept up behind Gourry and laughed her head off saying Lina couldn't be serious about all this. Lina shouted to all of them how stupid do they think she is. Of course she didn't believe any of this. But she Dill Brand Gourry and Nahga through the roof.
At the prom, Lina went with Xelloss as her so-called date. Nahga awaits for Gourry but Gourry went with his sister, Ameria. Lina with her hair up, wearing a slinky black dress, and makeup looked so...unlike Lina. Towards the end of the prom, Xelloss was very sure he could make out with the new Lina. Amelia apparently had heard about this and immediately told Gourry about that. Gourry felt chivalrous and rushed over to save Lina. But ....oh-uh... just as Xelloss was about to seduce her, the old Lina emerged from within and cursed Xelloss and kicked him in the groin causing major pain. The old Lina was back! She tore off her long skirt and washed her makeup off and let her hair down again. She laughed at the misfortunate Xelloss and the wide mouthed Nahga and then she jumped out of the ballroom while Gourry followed behind. He saw Lina sitting alone outside and went towards her. Lina said she must have looked terrible with the torn dress and all. Gourry then told Lina that he doesn't care about all those fake stuffs anyway. He like her enough as she is. Lina was so touched by Gourry's words that she proceeded to kiss him. But then Gourry added that he like her, flat chest and all. Wrong move... Lina began bashing him. Owari .