Earth. The late 20th century. Across the world, the mobile phone is gaining popularity as more and more people decide to join the digital age. But for the residents of a sleepy English town sitting in the shade of a new transmission mast, that ubiquity has a troubling cost.

When the TARDIS veers off-course, the Doctor and his companions find themselves in the middle of a mystery. Sometimes the past comes back to haunt you. And sometimes the future does as well.