On her way to the first day at her new high school, Momoka Sonokawa encounters a strange woman who brings a pair of guns out at a train molester, only to get arrested herself for possessing firearms. Momoka spots the same woman at her school and follows her to a dilapidated building, where she ends up being caught by the school’s Survival Game Club.

Momoka meets the Survival Game Club's advisor, Sakura, who often finds herself in a string of unfortunate incidents. Sakura tasks the club with removing a hornet's nest, with proves more dangerous than expected due to Sakura's involvement. Later, Momoka faces up against the Chino Elementary School Survival Game Club after their representative, Roselia Haguro, insults her, finding Roselia to be a tougher opponent than she thought. Miou soon shows up and changes the rules, with the winner decided by whoever can retrieve the club mascot, Platy, from a crow.

Momoko competes in a light gun game against one of its top ranked players, a fat otaku named Karaage Lemon, with an embarrassing punishment should she lose. Later, Momoka ends up gaining a large amount of weight and ends up going to extreme lengths in order to lose it. Afterwards, Momoka tries to find out the true nature behind Platy, before winding up in a battle against her mother.

Miou takes the girls to a temple to practice meditation, where she almost becomes tempted to follow the way of the Buddha. Later, Urara finds herself stuck on the side of the school building after inadvertently breaking the toilet, valuing her dignity over her safe rescue. Afterwards, as Momoka discovers a priceless antique gun, her desire to auction it resulting in a battle between the heavenly and devilish sides of her conscience.

Student Council President Yayoi Isurugi, fed up with Miou making a fool of her at club meetings, attempts to destroy the Survival Game Club by swaying over its members to her side, but doesn't have much success. She then attempts to defeat Miou herself by constantly serving her food she doesn't like, though this only leads to some dubious rumors. Later, Sakura brings an executive chair to the clubroom, prompting the club members, who had just watched a yakuza movie, to compete over who gets to sit in it.

Coming across a village that is constantly plagued by animals eating their crops, the girls aim to get hunting licenses in order to help the village with their crisis, only to find they are too young. Later, the girls dress themselves up as men, with Momoka taking advantage of her manly look to become popular with the girls, learning a harsh lesson in the process. Afterwards, the girls go on a search for a suspicious person roaming the school grounds targeting the club members.

Momoka accepts Maya's offer to do a photoshoot for money, but runs into trouble when an infamous trio of perverted camera otaku use every technique they can to get a picture of her panties. With the help of the creepy Karage Lemon, she just might be able to escape. Afterwards, the Survival Club of "The Immaculate and Pure Ladies Academy" challenges the protagonists to a 5-on-5 battle in the mountains. Maya very quickly finds herself the only surviving member of the team when it turns out all of the opponents set up the match to act out their fantasies on her.

Momoka attempts to pass Platy off as a well-trained dog in order to enter a swanky dog café. Meanwhile, Maya, Urara, and Kayo end up getting locked in the school pool, which is believed to be haunted, putting them in a life or death situation. Later, the girls go to Australia to participate in a survival game race against a team of elderly but skilled players.

Momoka finds a treasure map she had drawn when she was a kid, so the group go to her hometown to search for treasure. Later, the girls try to help out an idol named Yammy, who has gained an incredible amount of weight after being heartbroken. Afterwards, the girls find themselves being hunted by a mysterious being during a jungle exercise.

While on an errand to get Miou's gun fixed, she visits a decal shop to get her phone decorated, but due to some misunderstanding from the cashier accidentally gets Mio's gun decorated instead. Later, Momoka learns how to walk in high heels from Lemon in order to impress a rich old man and get a cash reward. Afterwards, Miou brings in a high quality crab, who becomes determined not to become dinner, prompting a battle between the survival game club and Platy, who tries to protect the crab.

When Momoka appears to have caught an unknown virus, the others vow to protect her from becoming a medical test subject, coming up against the National Survival Game Club. After an intense battle filled with many sacrifices, Momoka prepares to give herself up, only to learn they have found a simple cure. Later, at Christmas, the group attempts to plan a surprise birthday party for Urara, whose birthday is on Christmas Day, but nothing seems to go according to plan.