Hiroshima, summer of 1945. A young girl named Nobuko saves a starving kitten from crows. She wants to keep the kitten, but her parents dismiss the idea. Nobuko eventually convinces them to let her keep it. She and her brother Makoto name the cat Kuro. Kuro quickly brings joy and laughter to the family. As World War II takes its toll on Japan, it becomes harder for Nobuko and her family to care for Kuro. One August morning, Kuro begins acting strangely...

The first theatrical film of the anime series Kinnikuman. After winning the 21st Choujin Olympics, Kinnikuman plans to build his own theme park. As his friends and celebrities arrive, the sky grows dark and with a flash of lightning Kinnikuman's championship belt is gone. He then sees that it has been taken by Octopus Dragon III, who challenges him to take it back. Kinnikuman tries but fails and Mari is kidnapped. Octopus Dragon gives Kinnikuman a time limit to save her before she is fed to the monster Gigasaurus and then returns to his home world of Planet Metro (メトロ星, Metoro-sei). Despite his injuries, Kinnikuman is determined to go and reclaim his belt and Mari. Luckily, Terryman, Ramenman, Robin Mask, Warsman, Brocken Jr., and Rikishiman arrive to lend him a hand.

監督：白土武、山本暎一 総監督：舛田利雄 キャラクターデザイン：湖川友謙、高橋信也 メカニックデザイン：板橋克己 総作画監督：宇田川一彦 作画監督：金田伊功、角田絋一、遠藤政治 作監補佐：新井豊、敷島博英、大森英敏 美術監督：勝又激、辻忠直 撮影監督：池田重好 音楽：宮川泰、羽田健太郎、高崎晃、天野正道、安西史孝 音響監督：田代敦巳 設定ブレーン：御厨さと美、豊田有恒、山本英明、藤川桂介 脚本：笠原和夫、舛田利雄、山本暎一 絵コンテ：白土武、遠藤政治 スペシャルアドバイザー：松本零士 プロデューサー：勝間田具治 製作・総指揮・企画・原案：西崎義展

小和尚一休生活在日本幕府时代，他勤奋好学，热心助人。一休由于天资聪颖、爱动脑筋，经常能将人们日常生活无法解决的问题聪明化解，于是英名远播。由于一休名声在外，经常就有一些需要帮助或者故意想刁难他的人会找上门来。热心的一休总是来者不拒，只要有问题相求，他总是会开动他聪明的脑筋解决问题。因此，无论是将军，桔梗店老板还是新右卫门先生总是难不到聪明的一休。一休解决问题，不仅让坏人们得到了应有的惩治，而且还会教会你很多生活中的窍门。