The DOCTOR, SUSAN, IAN, BARBARA and HUR are herded in, carrying ZA's stretcher. He is a bad leader!! ZA: They are inside the cave. His name is "Friend." Nothing lives there. They are a new tribe. They are a tribe who know how fire is made... I hope he doesn't make Grandfather prove that. Do not try to leave here. They nod. The DOCTOR and SUSAN continue running. DESERT
(As the tribesmen run up to the ship and start to throw their spears, the police box, its top lantern flashing on and off, goes transparent...and fades out of sight. TARDIS. (The DOCTOR takes up his coat and points at an instrument on the console)
DOCTOR: Now, what does the radiation read, Susan?
Plan: A: two humble teachers; Q: Who were Barbara Wright and Ian Chesterton? A: 1963; Q: When did Barbara Wright and Ian Chesterton meet Susan Foreman? A: Susan Foreman; Q: Who is the bright student that Barbara Wright and Ian Chesterton are surprised by? A: her upbringing; Q: What did Barbara Wright and Ian Chesterton want to know about Susan Foreman? A: her residence; Q: Where did Barbara Wright and Ian Chesterton seek out Susan Foreman? A: a junkyard; Q: Where did Barbara Wright and Ian Chesterton find Susan Foreman's grandfather? A: an ordinary police box; Q: What do Barbara Wright and Ian Chesterton discover is actually bigger on the inside? A: his and Susan's otherworldly origins; Q: What does the Doctor decide the teachers know too much about? A: time; Q: Along with space, what does the Doctor take Barbara Wright and Ian Chesterton on a journey across? A: home; Q: What does the Doctor call the TARDIS? Summary: Barbara Wright and Ian Chesterton, two humble teachers during 1963, are surprised by a bright student named Susan Foreman. Feeling inquisitive of her upbringing, they seek out her residence to learn who nurtured such a genius. There, they discover a junkyard inhabited by her grandfather, simply known as "the Doctor", and he doesn't want them lurking about. When the teachers refuse to leave, they discover that an ordinary police box is actually bigger on the inside. The Doctor decides they know too much about his and Susan's otherworldly origins and takes them on a journey across space and time in his TARDIS, the place he and Susan now call home.