More than this

A boy called Seth drowns, desperate and alone in his final moments, losing his life as the pounding sea claims him. But then he wakes. How is that possible? And where is this place? It looks like the suburban English town where he lived as a child, before an unthinkable tragedy happened and his family moved to America. But the neighbourhood around his old house is overgrown, covered in dust and completely abandoned. What's going on?