Some students and their professor, hard at work graphically modeling a two-dimensional world, find, to their astonishment, that they are communicating with Yendred, their only contact in the 2D world of Arde. At first disbelieving, they are soon entranced by a universe in which astonishing tiny creatures - indeed an entire astonishing world - exist solely on an x-y plane. So begins A.K. Dewdneys tale of trans-dimensional discovery and communication. Following in the footsteps of the nineteenth century classic Flatland, The Planiverse challenges and delights, inviting readers to imagine just how a two-dimensional world might work. But the book is also a cautionary tale about the difficulties of communication from one totally alien world to another.