gary: sungai watch, in many ways, is more of a data river clean-up organization.verybody to see, so, you know, they can engage. gede: i believe, like, every generation has their own revolution. our topic now is about the environmental issue. male: [speaking foreign language] matt: gede robi is a musician and an educator. his band, navicula, are rock and roll royalty. for two decades they've brought politics to the young people of bali through their music. gede: i love rock and roll so much because in concert we can collect a concentration of audience in one place. even the religion is transferred by shadow puppet, by theater. so, what's the difference with this--with the rock and roll? matt: today, robi is putting the final touches on his film entitled "pulau plastic," translated, means "plastic island." gede: in indonesia alone, more than 93 million plastic straws are used every day. more than 500 million plastic bags, single use plastic bags, is used every day. matt: produced with local ngo kopernik, this film is a shift for robi from years of frontline activism