Tōi uchū kara san-tsu no inseki ga sora o yokogitte chikyū ni rakka shita. Hōkoku o uketa seinen erīto chīmu wa chōsa ni iki,-bako o mochikaetta. Onaji koro, shōgakusei no Sō kai wa inseki o mitsukete ie ni mochikaetta. Ryōshin ni hakken sa reta nochi, kare wa inseki o jidō sentā ni mochikonda. Tsuchi Igaki wa hako o ake, soko ni sho kareta kotoba o mitsuketa. Taichō wa kare ni sagyō o yameru yō ni meijitaga,-ji sudeni ososhidatta. Inseki no ichi-tsu kara chīsana kaibutsu mini n ga tobidashi, kodomo-tachi no ma de ninki-sha ni natta. Dōjini, mini n ga sōzō shita ōkina kaibutsu gamoran mo arawareta.
Three meteors streaked across the sky and landed on the earth from the distant universe. After receiving the report, the Youth Elite Team went to investigate and brought back a box. At the same time, elementary school student Sosuke found a meteorite and brought it home. After being discovered by his parents, he took the meteorite to the children's center. Doigaki opened the box and found the words on it. The captain ordered him to stop working, but it was too late. The little monster Minin jumped out of one of the meteorites and became a popular celebrity among the children. At the same time, the big monster Gamoran imagined by Minin also appeared.
