Elliot and Helen travel to Ireland to find answers about Elliot’s past. However, after Elliot is violently kidnapped, they must each continue their dangerous search alone.

Elliot seeks help from an unlikely ally to secure his escape from the island. Meanwhile, Helen gets acquainted with some threatening figures as she continues to track Elliot down.

Elliot receives a surprise visit from Ethan, and the pair work together to track down Helen. Meanwhile, tensions are reignited between Elliot’s family and the McDonnells.

Reeling from Helen’s discovery, Elliot confronts Frank, who offers him a deal. With all the pieces on the table, Elliot and Helen go to meet Niamh – only to find the deal will be difficult to deliver on. Fergal makes a startling discovery about his family and decides to take matters into his own hands whilst he’s away at Irish school. Violence continues to mount drastically between the Cassidys and the McDonnells, putting Helen and Elliot in even more danger. Helen begins to question whether their trip to Ireland has caused more trouble than it’s worth, causing tension between the couple.

Recovering from the events of the previous episode, Helen reflects on her relationship with Elliot and finds herself drawn to the mysteries of the past. As Helen digs deeper into the history of the McDonnell and Cassidy feud, she and Elliot realise that the truth may destroy their relationship. Meanwhile, Elliot is forced to reckon with the consequences of his actions and must make a choice in order to protect the ones he loves. Niamh refuses to back down but runs the risk of hurting others in the process.

Elliot and Helen are running out of time to end the escalating tensions between the McDonnells and the Cassidys. Elliot makes one last-ditch attempt to develop a relationship with his family, which may prove to have disastrous consequences. Helen realises that she needs Ruairi’s help to settle the score between Frank and Niamh for good, and Ethan sees yet another opportunity to win Helen back. As the violence threatens to spiral into all-out war, will Helen and Elliot be able to put an end to it? Will they find the answers they’ve been looking for?