In a world where monster invasions are rampant and frequent, being an adventurer in a party is considered one of the most desirable jobs for the honor and fame it provides. Wanting to make a name for himself, a young human warrior named Alvin intends to start his career by completing a low-level request for the guild. While en route, Alvin is confronted by a magical bear and immediately finds himself in a pinch. As luck would have it, a dark elf healer named Karla approaches and asks if Alvin requires assistance—being seemingly oblivious to the situation before her eyes. After a discussion needlessly complicated by Karla's absurdly eccentric personality, Alvin somehow convinces her to help him. Unfortunately, instead of healing him, she accidentally casts a curse: if Alvin strays too far from her, he shall die. Despite being forced to accompany Karla until the curse is broken, Alvin remains steadfast in his ambition to become a full-fledged adventurer. With a partner by his side, the journey toward his goal may grow easier—or harder—depending on Karla's whims.

Mature grade school student Arisu Tachibana is an aspiring idol who receives an invitation from her company president to participate in the Third Entertainment Section—a new idol project. Arisu and eight other young girls soon meet their producer before beginning idol-related activities. To the girls' surprise, their producer appears to be a childlike adult and nothing like what they had imagined. The producer, who is taking on the position for the first time, also had no idea that he would be meeting a group of short, young idols. The awkward situation leaves Arisu disappointed, and she wishes for a producer change. However, the producer, with his genuine love for idols and his desire to see them shine, will not let this opportunity pass and expresses that he is serious about working with the girls. Thankfully, the young idols accept the producer after seeing his unwavering passion for idols, serving as the start of their journey to the stage of dreams.

Hime Shiraki appears to have it all: an angelic voice, an innocent personality, and an adorable face that enamors all onlookers. However, her cuteness is all a lie—it is purely an act to achieve her self-centered goal of marrying a rich suitor. Though she often plays up her innocence to gain favor from those around her, Hime's facade does not absolve her of responsibility when an accident leaves Mai Koshiba injured. Learning that Mai is the manager of Café Liebe—a cafe themed as an all-girls academy—Hime is coerced into taking up a part-time position until Mai recovers. However, Hime's facade cannot cover up her shortcomings at being a waitress, earning her the ire of one of her coworkers, Mitsuki Yano, the elegant "onee-sama" who often berates Hime over her mistakes. As Hime struggles to adjust to her new job in addition to Mitsuki's unrelenting hostility, her real personality begins seeping through the cracks.

Sasaki, a 39-year-old corporate employee, has resigned himself to live a modest life without dreams and dangers. To his great surprise, his fate takes a brutal turn after he decides to adopt a Java sparrow that he names Pii-chan. The talking bird not only happens to be a reincarnation of a famous magician from another world, but it decides to grant some of its powers to Sasaki—along with the ability to traverse between worlds. Sasaki begins a lucrative business of selling technological items from his world to the less advanced civilization of the other. However, Sasaki's life becomes more chaotic when he stops an attempt on a woman's life with his new powers. Unfortunately, the woman Sasaki saved also happens to be a government agent named Hoshizaki, who is tasked with tracking down gifted individuals like him. Forced to join Hoshizaki's secret agency, Sasaki partakes in dangerous missions to find other gifted criminals. He does not even have the luxury of hiding in the other world, where a war is about to break out. If he wants to protect peace in both worlds, Sasaki will have to become the hero that no one expects him to be.