The picture-perfect Henderson family try to escape their past at Summerwater, but Becky and Alex go down dangerous paths. 

A big blowout forces the residents to finally come face to face and resolve their differences. But just as the mood shifts to euphoric highs, tragedy strikes and there's a mighty fall. As intense divides form and unlikely bonds are made, the residents must work together - and a death in camp leaves the holiday-makers grappling with their guilt and searching for someone to blame.