Ren Homura has just moved back to his hometown of Kaminohara, but he is not able to remember much about the time he spent there other than vague flashbacks. When he retrieves his cell phone which he had sent to a shop for repairs, he finds that a mysterious game titled "Monster Strike" has been installed on it. Unaware of its purpose or how it got there, Ren decides to open it, an action that will change his life forever as he finds himself suddenly attacked by a strange man. Now trapped on the roof of his school which strangely has been designated as a "stage," Ren is shocked to see the man summon a realistic monster from the game, one that is more than capable of inflicting damage on a human. His only chance of getting out of this situation alive is by summoning the dragon Oragon, who tells Ren that he will crush the opposing monster for him. Unfortunately, it turns out that Oragon is a tiny dragon that is completely useless!

Kaede, an ordinary high school girl, suddenly wakes up in an unfamiliar alleyway—only to realize she's been transported to a mysterious world inhabited by beastmen, elves, and dragons. Among her belongings, she discovers a strange book that wasn't there before. To her surprise, it allows her to create potions simply by chanting the word "create." Relying on these potions to survive, Kaede navigates the challenges of this fantastical world while clinging to the hope of one day returning to Japan. Her journey of struggle and discovery in this otherworldly realm is just beginning...

Like any proper noble lady, one must have certain acquired tastes. For Melphiera Marchalrayd, she just happens to crave a rather exotic protein—monsters! But do not judge! Despite its bad reputation, monster meat can be used in exquisite cuisine and Melphiera is determined to change the kingdom's opinion of it! Unfortunately, since debuting in society, Melphiera has been struggling to find her perfect match...until she meets the fearless "Blood-Mad Duke" of Galbraith!

The story centers on Gen Kinokura, a devoted solo camper who treasures his solitude. During one of his usual camping trips, he unexpectedly crosses paths with Shizuku Kusano, a total camping novice. What starts as an accidental encounter evolves into an unusual partnership, as the two embark on what can only be described as "solo camping for two."