Those who receive the Babel Revelation must conquer several wars and difficulties. These "Hand Shakers" go to the world of Ziggurat, an other dimension where time no longer exists, by holding the hand of their particular companion. Each Hand Shaker must compete for the opportunity to meet with God, who will reward them by giving them a single desire. Tazuna Takatsuki, a high school student who enjoys tinkering with objects, is one of these Hand Shakers. Tazuna comes into Koyori Akutagawa, a bedridden girl who reminds him of his deceased sister Musubu, after getting a request for repairs from Professor Makihara of a local institution. Tazuna grasps her hand, remembering her dying wish to never let go of it.