October 1891. A hard winter approaches across the Rocky Mountains. The city of Butte, Montana is rich on copper mines and rampant with vice and debauchery among a hard-living crowd of immigrant Irish workers. Here we find Tom Rourke, a young poet and ballad-maker of the town, but also a doper, a drinker, and a fearsome degenerate. Just as he feels his life is heading nowhere fast, Polly Gillespie arrives in town as the new bride of the extremely devout mine captain Long Anthony Harrington.

In 1792, formerly enslaved Benjamin Honey and his Irish wife, Patience, discover an island where they can make a life together. Over a century later, the Honeys’ descendants and a diverse group of neighbors are desperately poor, isolated, and often hungry, but nevertheless protected from the hostility awaiting them on the mainland.

It is a hot summer in rural Ireland. A child is taken by her father to live with relatives on a farm, not knowing when or if she will be brought home again. In the Kinsellas' house, she finds an affection and warmth she has not known and slowly, in their care, begins to blossom. But there is something unspoken in this new household—where everything is so well tended to—and this summer must soon come to an end.

I was, in life, to be a gambler, a risk-taker, a swashbuckler, a knight. I accepted, then and there, my place in the world. I was a fighter of windmills. I was a chaser of whales. I was Not Sidney Poitier. Not Sidney Poitier is an amiable young man in an absurd country. The sudden death of his mother orphans him at age eleven, leaving him with an unfortunate name, an uncanny resemblance to the famous actor, and, perhaps more fortunate, a staggering number of shares in the Turner Broadcasting Corporation.

Nicholas Coughlan is twelve years old when his father, an Irish civil servant, announces that God has commanded him to become a painter. He abandons the family and a wife who is driven to despair. Years later, Nicholas’s own civil-service career is disrupted by tragic news: his father has burned down the house, with all his paintings and himself in it. Isabel Gore is the daughter of a poet. She’s a passionate girl, but her brother is the real prodigy, a musician. And yet this family, too, is struck by tragedy: a seizure leaves the boy mute and unable to play.