The Gathering is based on the McAllister Affair short story series and follows the members of the Arizona chapter of CUPIC. An astute teenager has a major problem that might jeopardize her promising future. She suffers from vivid recurring nightmares.. Her loving parents feel helpless as they watch their daughter suffer. They can not give her an explanation for these dreams. Two members of a private organization, CUPIC (Central Unidentified Phenomenon Investigation Committee) and a local psychiatrist investigate, in an effort to solve this mystery.