The TARDIS mistakenly materialises in 1966 London where the Doctor is joined by two children -- Tony and Amy Barker -- and their dog, who hide in the TARDIS during a game of hide-and-seek..
''to be added''
They then materialises on the Sense-Sphere where they encounter primitives Sensorites feeding criminals to the spider-like Zilgan.
After their adventure, the Doctor promise to return the children to their proper time.
