待ちに待った富良洲高校の修学旅行！
京都にやってきた宝太郎たち。
加治木いわく、京都では最近UFOが目撃されているらしく、
言われるがまま修学旅行の研修テーマはUFO探しに。
そんな中、加治木が運命の女性との出会いを果たす！？
一方、京都でもクロトーの目撃情報が。
彼女の目的とは一体？
ところがケミーたちを家にお留守番させてしまった宝太郎。
仮面ライダーになれない！！！
どうする宝太郎！？そして加治木の恋の行方とは・・・？
Houtarou and his group from Furasu High School go on a school trip to Kyoto. Houtarou is assigned to a group study with Rinne and Kajiki, and by chance Kajiki meets a girl named Hijiri, and they hit it off. They immediately become attracted to each other.
At the same time, one of the Three Dark Sisters, Clotho, was also sighted in Kyoto in order to obtain something. But Clotho happens to see Houtarou and the others, and in her anger, she creates a new Malgam...!
