In a village in the Welsh Marches, the undercurrents are as dark and strong as the River Severn. After a beloved family member is drowned in a devastating flood, Bede and Elin Sherwell only want to pick up the pieces and pursue their off-grid life in peace. But when a local landowner applies to start fracking near their smallholding, they are drawn into the frontline of the protests. Mysterious threats and incidents begin to destroy trust, rake up the past and threaten their future together. Who is trying to ruin their world and how far will they go?