The previous synopsis of the movie was a very Japanese-like synopsis (not Americanized in wording as much) of what was in the Marmalade Style Book. This synopsis is from having seen and translated the movie directly.

The movie opens with a brief commentary by Miki followed by the Toei logo and the sounds of school chimes. The scene opens with the normal and natural sounds of high school life. Miki is lying in bed in the nurses office, her eyes are closed as Yuu enters the room. There are cherry blossoms floating through the window. He asks her if she's sleeping. No answer. Yuu watches her intently. He puts his hand on the headboard to brace himself as he leans over for a very long kiss. (At this point the background music suddenly stops
and the minute he quits, it continues. This was VERY EFFECTIVE.)

Just as at the end of episode 1 of the TV series, Yuu pulls his hand up to his mouth as though thinking about her reaction then turns and leaves the nurse's office. Miki bolts upright, throws her hands to her lips "What is he up to NOW! Why?! We just met!"

The usual opening song with what looks like the same art is played at this point. Ah! But there's a different in one spot! At the point where Yuu is up on the hill waiting for Miki, he turns around. At this one point the art HAS BEEN redrawn with Yuu having a slightly different look.

The movie returns with uniform clad Yuu walking calmly and stately in the school hallway. All the sudden he smiles "Miki must be panicking about now. But, for me, it felt right."

Yuu remember the events that occurred two weeks previously as his parents told him that they were getting a divorce. He seems slightly surprised briefly, but keeps it under control. His parents explain that they met the Koishikawas in Hawaii and how Dad fell in love with Koishikawa Rumi-san and Mom fell in love with Koishikawa Jin-san. They all talked it over and
decided to exchange partners and remarry...would Yuu let them, please?

Yuu tells them he doesn't care, it's fine with him. Later, in his room he finds he just can't keep his mind on the architectural book he's been looking at. He shuts the book and somehow causes the photo of he and his parents to fall flat on the desk. It picks it and muses
affectionately. His face grows serious as he remembers the rest of the conversation with his parents - this is where they tell him that the other couple have a daughter the same age as him, named Miki-chan, and that they and the other couple are going to rent a house together and everyone will live together. That soon they have a dinner planned with the Koishikawas and Miki.

Yuu is out in the entrance putting on his shoes to go out. His parents encounter him there and Youji tells him that he thought they'd go for a Sunday drive. Yuu, in a kindly voice, tells them that he's sorry, but that he has to work. His parents seem disappointed and Yuu again tells them that he's really sorry. Youji warns him to be careful of cars. Yuu smiles "Damn, I'm not a child." Youji keeps up the little boy Yuu routine as Yuu leaves "If you fall down get up!"

Yuu commutes on a train, then walks through the city. The normal sounds of every day city life are pronounced as the serious faced young man saunters through this busy world without taking any notice to any of it. Suddenly, as though not being able to stand what's bothering him, he lopes off down an alley or side street. He starts roaming around and
comes to a park where a mother and child are. He smiles as he briefly takes notice of them. In a wooded area, Yuu walk down some steps and as he get to the bottom, he sees a red headed, pony-tailed girl practicing tennis against a wall.

He becomes fascinated by the determined girl who is completely absorbed in what she's doing. As he watches her, she is perfectly fluid in motion and there's "something" about her. Finally, she does miss the ball but grabs it up on her racket and prepares to stop. She takes off her arm band and sets it down, grabs her towel and throws it over her head.
A voice rings out...

"There's a monster!" Five little boys run up and ask "Are you ready, Towel Monster?!" The little boys in their Gastaman outfits aim some nasty sized water pistols and blast her! Miki yanks the towel off her head and says irritably "What?!"...

"BE CAREFUL, GASTAMAN!" one little boy's voice rings out THE MONSTER TURNED INTO A WOMAN!" Little GASTAMAN warns "Be on your guard Gast Beta, Omega, and Zeta!"

Miki is still trying to get over them calling her a monster "Monster? Give me a break." But the young hero won't be put off. GASTAMAN orders his men to combine power. He gives the orders "SPRING WIND TYPHOON! Miki is blasted! She screams and tries to cover herself with
towel. Yuu in the background looking on seems concerned.

The boys congratulate themselves on having been successful but...
A frightening voice threatens from below the towel...

"I'm surprised you spotted me, Gastaman! Miki pretends to be the towel monster. (This spot is VERY FUNNY as she begins to play the part to the fullest. Gastaman, the leader, tells her that they're not scared.

Miki teases them and asks if they're prepared because she's going to roll them up like so much Norimaki. In no time, the kids are running with Miki in pursuit. Yuu howls with laughter.

The group runs off before Yuu knows it. He runs up to where Miki and the kids had been with some disappointment. He picks up the arm band that Miki accidentally lost while playing the towel monster. He looks at it and sees the Initial MK.

Later, he walks into the Junk Jungle and greets his boss with a good morning and jokingly tells him that he came to see if he was goofing off. The minute that Yuu asks Kijima for coffee, his boss knows something's wrong. Yuu, being Yuu, denies it. As he sits at an outdoor table drinking his coffee with Kijima sitting opposite he see a pig-tailed girl run past and
realizes it's the same girl, he saw earlier, in a pony tail and tennis outfit. He excuses him-self from Kijima and takes off after her. He's got her arm band after all.

She’d gotten kinda far away from him. When he gets to an intersection, he's not quite sure where she is until he hears her voice ring out "Meiko!" He turns and sees her as she comes up to another girl, who accuses her of being late. The red head begs forgiveness and promises to buy her friend a double scoop of ice cream. Meiko forgives her right away. Yuu sidles
up to a glass phone booth where he can get a better look.

"We finally found you, Towel Monster!" rings out as the little boys run up to her and Meiko in excitement. Miki tells them that she didn't run off that she told them that she had to go so she's not the towel monster anymore. The boys say then that she's Towel Monster Koishikawa! Miki sarcastically says "NOW the Towel Monster's part of my name>"
Meiko asks her who these kids are. The kids are more than happy to show her as they strike poses.

GASTAMAN ALPHA!
GASTAMAN BETA!
GASTAMAN OMEGA!
GASTAMAN ZETA!
GASTA-MAN!

These are the Gastaman Brothers!

Yuu starts to go over in his mind what he just heard - Meiko calling her "Miki" and the boys calling her "Towel Monster Koishikawa". He looks at the initials on the arm band and is sure. As Miki, Meiko, and the boys walk off, Yuu gets a set look on his face, begins to follow.
The arm band he determinedly puts back in his pocket.

He watches from a distance as the boys try to teach Miki the poses for being a Gastaman Brother. Miki nearly topples down the steps she's standing up just trying it. Meiko looks on in embarrassment, the crowds look on in amusement, and Yuu laughs.

When she and Meiko get ice cream. Yuu does too...and he gets the same flavors as Miki.

Wherever Miki goes, there's Yuu too. She pets a dog, he pets one too. When she's shopping, he's watching. At one point, she tries to get a box out of a stack of them. The whole thing nearly tumbles. Miki saves it just in time. Yuu was a bit worried at first but giggled at her expression afterwards.

Later Miki and Meiko are having coffee (one presumes it was anyway) while sitting at an outdoor table. Across the street at another table is Yuu keeping an eye on Miki. A foreign couple at the table next to Miki and Meiko directions. Miki can be see gesticulating as she tries to make herself understood by them. She is very cute as she does this and Yuu smiles
with something akin to deep feeling. The foreign man sees Yuu watching Miki and asks her if he's her friend. Miki is confused and looks across the street. No one is there. The man explains that there was a very handsome boy watching her. Meiko translates the English for Miki. Miki is left confused.

On the way home, Yuu pulls out the arm band and tightly and emotionally closes it in his hand and runs home.

Uniform clad, Yuu comes out of the house. His parents remind him that that night is the dinner with the Koishikawas. He tells them that they needn't worry, he won't forget. Early evening rolls around and Yuu is running to get to the restaurant because he's late. Once there, he's led to the room where everyone is already seated. He's obviously nervous as he adjusts his collar. He walks into the room. The scene changes as though it’s become frozen - with Yuu looking at Miki; and Miki, in return, stunned at the sight of the handsome boy. His thoughts follow: "The wrist band hasn't been returned yet. But someday I'll be able to. Someday......for sure."