After failing to intervene in a violent incident at a London playpark, John moves his family to the rural Scottish Idyll of Coldwater, where their new neighbours harbour a dangerous secret. 

Tensions rise as John and Fiona attend the funeral of a beloved local resident, before hosting old friends from London. Tommy and Rebecca are thrown into a panic when they discover their son Cameron has gone missing. John and Fiona attempt to maintain the appearance of a contented life in front of their friends, but old wounds resurface and it's not long before Tommy shows up to their dinner unannounced.