With the X-VENTURE Xplores grounded, it is up to the elite X-Guard to show those brats how it is done… except that they do not! Haunted by a spectral predator, who will come to their rescue? Rain, Sean, and Stone, naturally! Aided by Stone"s tech and mad Dad, our terrific trio will not be tied down, lurching into the past abroad Dr.Da Vinci"s original time buggy! Avoid extinction, extract X-Guards. procure the Professor, that is a big task even for our heroes!