Ronan plays Rona, who hails from the Orkney Islands, a remote archipelago off the north coast of Scotland. She returns home after a decade of alcohol-related mishaps in London, shown to viewers in flashback as director Nora Fingscheidt plays with the story’s timeline like a deck of cards that she shuffled and hastily but purposefully reassembled.

We see Rona, who has a master’s degree in biology, mentally checking out at work and falling on the floor in bars. We see her relationship with her boyfriend Daynin (Paapa Essiedu) fall apart after one too many drunken nights and broken bottles. She struggles with her deeply religious mother Annie (Saskia Reeves) and struggles with her bipolar father Andrew (Stephen Dillane). Her path takes her to AA courses and eventually back to the Orkney Islands, where she settles into a tiny caravan and tries to regain control of what is left of her life.