It is the start of a lazy summer in Devonshire for twelve-year-old Kile, eleven-year-old Jen, and ten-year-old Dex. They're looking forward to working with Kile's falcon, C-zer, and generally just having fun-until something disturbing disrupts the peacefulness of the farmlands.
The cows from the surrounding farms had been disappearing, and now Kile's parents suspect that they same thing is happening to their cows. At the same time, Dex-a genius who speaks only through his computer and has created a probe of sorts-tells Kile that there is something mysterious in Kile's attic. The three children go exploring, and find something very unusual and mystical in an old trunk, sparking an adventure that will change all their lives.