Sixteen-year-old Alex, his 12-year-old brother James and their feisty friend Bim have a life-or-death mission. Armed thugs have captured two innocent wildlife conservationists, the boy's parents. Only the three children have time to engineer a rescue before the kidnappers reach their hideout high in the Himalayas. But saving them means crossing two high passes and fleeing from hungry predators. Surely they can't succeed?