The Doctor takes Clara and the children she babysits to a rundown amusement park in space where Cybermen are hiding, and ready to invade the most precious place in the universe, The Doctor's mind.
Hedgewick's World of Wonders was once the greatest theme park in the galaxy, but it's now the dilapidated home to a shabby showman, a chess playing dwarf and a dysfunctional army platoon. When the Doctor, Clara, Artie and Angie arrive, the last thing they expect is the re-emergence of one of the Doctor's oldest foes. The Cybermen are back!—Anonymous