Berni and Briain's public displays of affection certainly get tongues wagging all over Ros na Rún. Caitríona is shocked to see them together, especially when Berni reveals that this is more than just a fling. Mo begins her cancer treatment under the watchful eyes of Úna and Colm. Colm, having lost his mother to cancer is willing to help Mo in any way he can, but does he take it too far? Pádraig wants to protect his rights as a father with his solicitor's letter to Sonia, who is absolutely horrified with the contents.