What will you do when the last sky comes? The story follows a group of Tokyo high school students through a mystery revolving around a prophecy about the end of the world and they try to find their own "Wonderful Everyday". Wonderful Everyday: Down the Rabbit-Hole is a visual novel with multiple routes which develops a story based on a few concepts: "the sky and the world", "the beginning and the end", "literature and science", "savior and hero", "brother and sister".

"Down the Rabbit-Hole" - a story of the sky and the world. One day, Minakami Yuki witnesses a stuffed toy falling through the air. Battered and worn, how many times has this doll fluttered downwards, released as an attempted offering to the sky? An offering to the sky - a way to find the "day we return to the sky"; a ritual passed down in this town since times gone by. Those efforts shall come to fruition in the place where the girls of earth and sky meet. Vega and Altair, Orihime and Hikoboshi, two points of light separated by the vast Milky Way. Together with Deneb, crown of the Northern Cross, they make up the Summer Triangle. Evoking the concept of the Trinity, this formation is also known as the "heavenly triangle". When this heavenly triangle shines overhead, the world and the sky will meet. Takashima Zakuro, Wakatsuki Kagami, and Wakatsuki Tsukasa, and our heroine Minakami Yuki set off on the search of that place where the points of the divine triangle cross, where world and sky join together.