The story centers around Akihisa Yoshii, the "baka" of the title. His academy rigidly divides up the student body into classes based on the results of tests. The prodigies are in the A class with reclining seats complete with air conditioning, but Akihisa is in F class, the lowest rung of the school ladder which is furnished only with low, decrepit tables and worn-out straw tatami mats. A girl named Mizuki Himeji is actually one of the smartest girls in Akihisa's sophomore year, but she had a fever on test day and was pigeonholed into the F class. Besides Mizuki (who Akihisa secretly adores), the F class also has Yuuji Sakamoto, the class president who has been Akihisa's friend and partner-in-crime since the freshman year. The school happens to have developed experiments to summon fantasy creatures, and Akihisa decides to rally F class to take on the higher-tiered classes and seize their perks. The F class uses the summoned creatures in an all-out battle for school supremacy.
This is a four-panel comic strip spin-off of "Bakatesu!” The members of class F Hideyoshi Kinoshita and Akihisa, Yuji, Mizuki, Minami, and Muttsurini who are even crazier than usual, are rampaging! The situation is more complex because Shoko and Kubo come to class F to see their favorite person! The strange daily life of class F with or without summoning wars is here!
Yoshii is facing a financial catastrophe if his grades remain abysmal, so he pleads for help with a study group from his classmates.

