Eden follows the troubled marriage of Billy (Aidan Kelly) and Breda (Eileen Walsh), who, on the verge of their 10th wedding anniversary, are struggling with the emotional distance that's developed over the years, and with their diverging needs and expectations. While optimistic Breda hopes that the couple's upcoming anniversary will revitalize the marriage, Billy withdraws into booze, sexual fantasies and reliving his past as a local hero.