The Pyramid at the End of the World (2) (S10E07)

An enigmatic pyramid emerges seemingly out of nowhere, triggering a countdown on every clock around the globe, signaling impending doom for Earth. Meanwhile, three rival military factions are poised for a catastrophic clash. An extraterrestrial species presents humanity with a tempting proposition that could avert disaster, yet comes with the price of subjugation. As time slips away, the Doctor faces an agonizing dilemma: should they accept the aliens' assistance to avert catastrophe? The fate of the world hangs in the balance.