The Daleks try to trick humans by pretending to be their servants, again. The Daleks need the Doctor to help them unlock technology which will revive them, again. The Doctor gets really mad at a Dalek and hollers at it a whole lot, again. New, colorful Daleks appear and show off in front of the old drab Daleks, again. The Daleks need the Doctor's help in evolving to a new form, again. Mark Gatiss makes a right mess of things, again. Mark Gatiss also appears in the episode and hams things up like an idiot, again.