Middle-school age contestants compete for the title of "top tracker" by investigating supposedly haunted placesarmed with "ghost tracking technology." Previously hidden camerasrecord each contestant's progress as they measure changes in temperature and electromagnetic fields. Their fellow trackers are able to watch and rate the performances, while sound effects and spooky music accompany stories of hauntings told by hostJoe MacLeod. The competitionfollows a standard bracket/elimination process, although wild-card trackers with high scores have the opportunity to jump back in during later rounds.