Anne suffers a traumatic carriage ride. Arthur makes a proposal, Edward makes changes within the brewery and Benjamin decides to strike out on his own.

All of Dublin society attends Arthur's wedding — including two faces he wasn't expecting. Benjamin steps up for Edward, and the expansion plan begins.

When Arthur's political career implodes, Rafferty helps comfort his wife. Byron makes a promise that could make or break the Guinness family.

A desperate Ellen asks Edward for help. On a trip to Cloonboo, Adelaide sees him in a new light and Arthur resolves to be more involved in the brewery.

Work gets started on the new social housing. Edward and Arthur agree to resist their own desires and do what's best for the brewery — and the family.

As election day approaches, a familiar face returns to Dublin. Arthur remains steadfast with his campaign — despite the looming danger.