Castrovalva

Four regenerates into Fivey, and Adric is kidnapped by the Master.

Nyssa And Tegan thus take the Doctor to the Dwellings õf Simplicity õf Castrovalva.

But they’re not simple, they’re complicated, like a Mc Escher painting.

Nyssa stops wearing the fairy skirt and loses the tiara and jacket.

Nyssa and Tegan fall in love, lose their vaginity, and sleep together. Meanwhile Fivey befriends middleaged Goth Shard of Van.

Michael Sheard is also there of course he’s there. He plays shard of van’s twink boyfriend, merry grave.

Merry Grave has a pharmacy that is in all four sides of the town, shard of Van has a library with identical books that have written on it everything that happened in Castrovalva up to the very moment Fivey and shard of Van read them together.

thats how Fivey realizes that the town is fake.

it turns out that the master used Adric to recreated the actual town of Castrovalva in Italy, but on a planet in andromeda, from the background of an old painting also by Mc Escher.

so the town disappears and Fivey wears the celery to remind himself of his long lost love shard of van.