In the film, the Human Animal Transformation Project will turn the title kindergartner Shin Chan and the rest of the Nohara family into animals.
Futabasha
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Shin-chan was living a normal life. That changed when a girl named Lemon asked him to become a secret spy to bring back her village's secret invention.
Source: MAL
The Nohara family is abducted by aliens from an advanced civilization who claim that Himawari is a legendary princess who will save the solar system. Unaware of the consequences, Shinnosuke signs a contract that allows her to be raised in the alien world. This forces him and his parents to go on a desperate quest to bring her back.
Source: ANN
