A once beautiful and lush planet is now a desert wasteland because its precious plant that contains life-essential energy was destroyed by careless explorers from Earth. Three kids believe that hope still exists and brave an active volcano and giant robots, overcoming all odds to find the last of the powerful plant and return their home to its former magnificence.

The once beautiful Planet Kepler is now dry and near destruction after its precocious Callaro plant was exploited to extinction. Three brave space kids - Axel, Jono and Gaga - embark on a daring mission to rebuild their desolate planet.