While High Meadow is dealing with troublemakers and raiders, Wisp follows an invisible trail across the country to rescue Nick. What had started as a simple trip turns into an undercover operation for Nick, leaving Wisp to return to High Meadow on his own with a van full of children. In the search for answers, Nick learns that the problems are more complex than he imagined. The country's minimal infrastructure is teetering on the brink of collapse...