Rhiannon Roberts, leader of the Nationalists, is the new First Minister of Wales.

Rhiannon decides to meddle with Megan Ashford's ambitious plans to strengthen the transport links between England and Wales.

Meirion Llywelyn fears the worst from the disciplinary panel.

Ed struggles to keep his personal and professional life separate.

Rhiannon takes action that weakens her alliance with Megan and Catrin.

Rhiannon is determined to defend control of Welsh agriculture regardless of the political price.

A plan to bury nuclear waste in North Wales has devastating political repercussions.

Meirion sees a chance to revive his own political dream.