Sixteen-year-old high school student Takeshi Chimatsuri has devoted his life to being a master samurai like his father was. Then one day, the Toki twins, two ninja sisters he's known since childhood, transfer to his school and issue him a challenge to take back their family dagger from him. Unfortunately for him, they have discovered his one weakness: the fear of the naked female body. Now, Takeshi must undergo special training from his classmates Atsuko and Torai, and his teacher Miss Ayatsugi to resist the combined brute strength of Akari and the temptation of her sex-crazed twin Kagiri. Class will never be in order with these three constantly fighting each other.

Ryoko throws a tea party for her friends. Flashbacks reveal the pasts of Ryoko's various guests.

While performing in a student film, Ataru cuts down Tarozakura, a large, ancient cherry tree. Strange things begin to happen all across Tomobiki: a mountain appears out of nowhere, spring changes to winter, and Lum loses her powers, while those around her act as if she doesn't exist.

The third film finds Ataru transformed into a pink hippopotamus, which sends Lum chasing after the wicked magician responsible, with catastrophic results. With Lum gone, her friends decide that there is no reason to remain, and so Tomobiki slowly returns to normal. The highlight of the film is a high speed chase scene with an angry Lum flying after the mysterious Ruu through the city at night and into a hall of mirrors (and illusion ). Ataru's true feelings for Lum are probably more obvious in this film than any of the others.