At Binan High School in the city of Binan, Japan, Yufuin En and Kinugawa Atsushi, along with along with Naruko Io and Zaou Ryuu, enjoy leisurely high school lives while hosting meetings of a do-nothing club called the Earth Defense Club.
The smart, the stupid... 
and those who are neither.
Die Klugen, die Dummen … und jene,
die weder das eine noch das andere sind.
Los listos, los estúpidos... y 
los que no son ni uno ni otro.
Los listos, los estúpidos... y 
los que no son ni uno ni otro.
Les gens intelligents,
les nuls…
Gli intelligenti, gli stupidi e quelli
 che non sono nessuna delle due cose.
Os inteligentes, os burros... 
E os que não são nenhum dos dois.