An Incident follows the Nadelman family from New York City to Maine as parents Philip and Lillian visit Joey, their puzzling, hard-to-handle son, at sleep-away camp. After greeting his parents with even more hostility than usual, Joey disappears. In the search for their son, Philip and Lillian expose the truth of their own relationship, and the full Nadelman family portrait, complete with shades of regret, recrimination, humor, and loss, is developed before our eyes.