Doctor Who (1963) Season 20 Episode 18 Enlightenment (2)

The Doctor and his companions continue their journey on board the sailing ship, the 'Undertaker', as they hunt down the energy-based being known as the Black Guardian. The TARDIS team soon discovers that the ship they are travelling on is actually a part of a deadly cosmic challenge which aims to test the worthiness of its participants.

As the Doctor and his companions learn more about the challenge, they encounter other ships, all of which are competing in the challenge. They soon realize that their opponents are not only human but also include highly advanced alien technology, including spaceships of all shapes and sizes.

The Doctor and his companions must work together in order to survive the various challenges presented to them as they compete in the cosmic challenge. They must use their wits and all of the resources at their disposal to overcome obstacles that threaten to destroy their ship and their chances of winning.

As the game continues, the Doctor discovers that there is more at stake than just winning the challenge. The Black Guardian has his own plans, and the Doctor must do everything he can to prevent the being from achieving its goal. Along the way, the TARDIS team discovers the true power of enlightenment and the danger it poses if it falls into the wrong hands.

The Doctor must face his greatest challenge yet as he comes face to face with his oldest enemy. The final showdown between the Doctor and the Black Guardian is one that will have far-reaching consequences for the universe as a whole.

With breathtaking action, intricate plots and a cast of memorable characters, 'Doctor Who' season 20 episode 18 'Enlightenment (2)' delivers a thrilling adventure that will keep fans on the edge of their seats until the very end.