Bright siblings—and amateur inventors—Nick and Tesla Holt are back for another thrill-a-minute adventure. This time a Hollywood movie is being filmed in town, but the real drama happens when the cameras are turned off. Mystery awaits behind the scenes, and the whole production may shut down unless the DIY detectives can crack the case, with the help of their friends Silas and DeMarco and a fresh assortment of homemade gadgets. Featuring instructions for all-new movie magic projects that kids can build themselves, this whiz-bang adventure is sure to delight fans of the series. Science and electronics have never been so much fun!