The Cactus Crime Scene Squad is back at it again. When Alison Gray gets the call to visit a real life crime scene as part of a book report for school, she jumps at the chance. After an abandoned restaurant burns in an overnight fire, she gets to venture inside with the investigators. What starts out as a quick visit to a crime scene turns into a full blown arson investigation. Before they know it, the Cactus Crime Scene Squad is immersed in an investigation that puts one of their lives in danger. The Squad quickly discovers that where there's smoke...there's certainly fire!