 The Doctor takes Rory and Amy to the planet <unk> , claiming it is a top holiday destination , but is unaware that the planet is suffering from a fatal plague , <unk> , that affects beings with two hearts and can kill them within a day . The native population has created " kindness centres " , where those infected by the plague are placed in one of several thousand accelerated time streams , allowing them to live out their lives whilst in communication with their loved ones through a large glass lens in the waiting room . On their arrival , Amy is separated from the Doctor and Rory , and becomes stuck in an accelerated time stream . As the Doctor and Rory discover Amy 's location , they are approached by one of the facility 's Handbots , a faceless white robot with human @-@ like hands . The Handbot explains the plague , and failing to recognise the Doctor or Rory as alien , attempts to administer a dose of medicine that would be fatal . The Doctor uses the glass lens to warn Amy of this , and tells her to wait for him in the kindness centre , promising to rescue her . The Doctor and Rory return to the TARDIS with the glass lens , which the Doctor uses to lock the time machine onto Amy 's timestream . Meanwhile , Amy discovers Interface , providing vocal control over the complex 's computer systems , and learns she can mask her presence from the Handbots using the emissions from the time engines driving the accelerated time streams . 
