Mars refugees cannot return to Earth so they migrate to the planet Choom inhabited by the mosquito-looking Zhuri. A young boy and his family struggle to fit in on a planet where they are the aliens, and despite their efforts, the Zhuri just don't like humans. The boy, Lan Mifune, tries to impress his insect-like classmates at school, but they are tired of humans' emotions and war and want nothing to do with him. If he and his family are to survive, they must find a way of changing the Zhuris' minds about humans.