The day when the angels disappeared (#1). Smaker Sean

Sam is ready for everything so that his mother is alive again. And a strange unleasant neighbor comes to the rescue. He says there is a remedy. It is only necessary to find a tree of life. It can defeat death. Sam grabs for this opportunity and, having secured the support of a girlfriend named Abra, rushes in search of a tree. But neither Sam nor Abra could imagine that thereby they enter into an ancient conflict and that they would never be the same. What is this tree of life? And what sacrifices Sam is ready to make to return mom?