TEXT: A sweeping shot, the camera flies across an old manor house style building. We see a sign which indicates this building is the Rattigan Academy. The camera continues to sweep, showing us the building lit in eerie pink lighting; looking atmospheric in the night time. Coming out of the main doors we see a big group of students, led by Luke Rattigan. The students are forcefully carrying Jo Nakashima. STUDENT: Come on, stop struggling! JO: You're gonna regret this! Completely ridiculous! Get your hands off me! They continue to carry her until they reach the main steps, once they reach the steps Jo is thrown down them along with her files which are scattered across the floor. LUKE: I think that makes my answer clear. He makes his way through the crowd of his red tracksuit-clad students. We see him, only 18 years old yet very much in charge, towering over Jo. LUKE: Don't you? Oh, and, er... if you're gonna go to print, spell my name right. Rattigan, with two Ts! JO: Oh this goes way beyond the newspapers! This thing's worldwide! I'm telling you, ATMOS is dangerous! LUKE: But if you had proof then you wouldn't be here! JO: Fine! If you won't listen, I'll find someone else who will. Having collected her belongings from the floor, Jo storms off towards her car. Once in the car, we see a sticker displaying ATMOS and see her ATMOS sat-nav. SAT NAV: Welcome. What is your destination? JO: Shut up, you're the last thing I need. She tries to switch off the ATMOS, but it will not turn off. SAT NAV: ATMOS cannot be disabled. JO: Right then. Take me to UNIT Headquarters. Tower Bridge, London. SAT NAV: UNIT Headquarters. The car sets off. In his room, Rattigan is talking to someone off screen, somewhere far away over intercom. LUKE: Her name's Jo Nakashima. Freelance journalist, clever by the sound of it. But not as clever as me
SUMMARY:
Martha Jones calls the Doctor for assistance during an investigation by UNIT . Minutes after the TARDIS materialises, Martha authorises the raid of an ATMOS factory. ATMOS is marketing a satellite navigation system developed by young prodigy Luke Rattigan . The system also reduces carbon dioxide emissions to zero; UNIT requested the Doctor's help because the technology may be alien, and they are also concerned about 52 early simultaneous deaths that occurred spontaneously. The Doctor investigates the system at Rattigan's private school and discovers a plot by an alien warrior race known as the Sontarans . Instead of an outright invasion, they are taking control with a combination of human clones, mind control, and ATMOS; Martha is captured and cloned to provide a mole within UNIT. Donna returns home to her mother Sylvia and grandfather Wilfred . The Doctor investigates the ATMOS devices and discovers it can emit a poisonous gas. Wilfred attempts to take the car off the road, but is trapped when all 400 million ATMOS devices installed in cars worldwide are activated. The Doctor stares helplessly at a street full of cars emitting the gas, while the Sontarans prepare themselves for battle.