Finetime
Finetime was a human-descended colony on an inhabitable moon. The city's inhabitants were the 17– to 27–year-old children of the rich inhabitants of the nearby Homeworld. The adolescents lived lives of party constantly connected to their Dots.
The city was surrounded by the Wild Woods, a lush jungle that the adolescents were warned was dangerous. Finetime itself was sealed off by a protective dome with strong enough security that the Doctor's TARDIS could not land there.
When the Dots developed sentience and began to hate their narcissistic and childish users, they created man-traps, giant slug-like monsters, to kill and devour every Finetime resident, in alphabetical order of their surnames. As a result, many of Finetime's residents were devoured by the monsters, with their Dots leading them to their deaths.
After the Fifteenth Doctor and Ruby Sunday arrived on the moon, they helped several of the residents, including Lindy Pepper-Bean, find their way out of the city to escape the man-traps. (TV: Dot and Bubble [+]Loading...["Dot and Bubble (TV story)"])