After a catastrophic deluge, Flemish and Dutch people are living seemingly peacefully together in the utopian society called Arcadia, until corruption surfaces.

His wife and four daughters are fined with penalty points on their citizen scores, causing their idyllic lives in Arcadia to fall apart and family relationships to suffer.

Revisor Harms of the Oversight pressures the family to help with her investigation into the resistance group de Ontrouwen (English: The Unfaithful) and a past terrorist attack on the Dome.

Milly got demoted from lieutenant to corporal in the army department of the Shield, Hanna is degraded from doctor to nurse in the hospital and Alex is not allowed to marry anymore because her fiancée Gloria has a much higher citizen score.

The hospital wants Hanna to help a boy with a low citizen score through an unauthorized botscan but she gets caught by head nurse Nora.

Jaak Philips wants to help Alex, the fiancée of his daughter Gloria, with her citizen score by giving her a job in his chip factory but she declines.

(Original Dutch title: Hanna nestelt zich dieper in het verzet) Milly asks Dax, the leader of the settlement, to help her find her father.

Sergeant Rein helps the settlement with supplies in exchange for their care of Nobel, a boy with autism and the son of his deceased girlfriend.

The fiction drama series Arcadia is a project of the Belgian production house Jonnydepony, specifically by screenwriter Philippe De Schepper and producer Helen Perquy.

[6] Initially, the series was called Decimation, after the original idea of main screenwriter Philippe De Schepper to tell a story about a wretched society, caused by overpopulation, seeking refuge in inhuman solutions.

With input from other screenwriters, that society was named Arcadia and the story was focused around one family who face unpleasant times when it is discovered that they cheated in the trade-off system.

A large set was built in the LITES studios in Vilvoorde,[7] including the headquarters of the Shield and also shot at existing buildings with architectural brutalism, characterized by their block-like concrete structures.