In a seemingly ordinary day, a diverse group of extraordinary individuals like the ambitious military girl Tanya, the teenage isekai hero Satou Kazuma, the powerful overlord Ainz Ooal Gown, and the demon sisters Rem and Ram encounter a mysterious red button. Compelled by curiosity, they press it, finding themselves transported to a strange new world. Trapped with no means of return, they must adapt to a normal school routine and forge friendships with one another. Amidst this unexpected twist, the classroom becomes a lively hub of unique and beloved characters, promising an unforgettable and entertaining experience.