With King Uther's sudden death, chaos threatens to engulf Britain. The sorcerer Merlin has visions of a dark future and installs young and impetuous Arthur, Uther's unknown son and heir raised as a commoner, as the new king. The two install themselves in Castle Camelot with their allies, which include Arthur's biological mother, his foster brother, and a quartet of loyal warriors. From Camelot, Arthur tries to build a new and better Britain, where people can live in peace. Meanwhile, Arthur's cold half-sister Morgan plots to take the crown from him. Banished by Uther, who was responsible for her mother's murder to put Arthur's mother on the throne, Morgan is responsible for Uther's death and wants to rule as his successor. Aided by her loyal maid Vivian and the devious nun Sybil, Morgan takes up residence in Castle Pendragon, from where she schemes against Arthur.

Quirke is the chief pathologist in the Dublin city morgue – a charismatic loner whose job takes him into fascinating places as he investigates sudden deaths in 1950s Dublin. His pleasures in life are raw and deep, a drink, a smoke, good food, a woman: With one woman in particular – his adoptive brother's wife Sarah and the forbidden love that has shaped and dominated Quirke's life.

The spoiled rotten and utterly unlikable rich kid George Amberson becomes horrified when his recently widowed mother rekindles her relationship with the wealthy Eugene Morgan, who she left decades earlier in order to marry George's father. As George struggles to sabotage his mother's new romance, he must deal with his own romantic feelings for Morgan's daughter and the consequences of his meddling as his once great family falls into ruin due to his machinations...

Aisha lives at a centre for asylum-seekers in Ireland in a state of ongoing uncertainty. Having fled Nigeria after a violent gang murdered members of her family, she is desperately trying to find some degree of permanency, where she and her mother can be reunited and live without fear. As she navigates the complex legal system to seek settlement in Ireland, she sparks an unlikely friendship with Conor, a new guard at the centre. A former prisoner, Conor’s life experience and calming presence resonate with Aisha, allowing for a tentative romance to begin. But the bond between the pair comes under strain as the threat of deportation looms ever larger.

Agnes MacDonnell, a strong and self-confident Englishwoman, owns a large estate on an island off the west coast of Ireland. When she begins a passionate but dangerous affair with her new estate manager, Agnes wages a desperate struggle to dominate this charismatic but destructive man.

An African immigrant bank security guard turns the tables on Dublin's nastiest criminals when they force him to be the "inside man" on a bank robbery.

After being abandoned by her husband after 28 years, an overbearing, self-centered psychologist embarks on a quest to revisit her past loves, accompanied by her 6-year-old grandson, who has Down syndrome, after he turns up unexpectedly in her van.