Kate Lethbridge-Stewart joins her father, Brigadier Lethbridge-Stewart, in a mission to save her sons life! For the last nine years Kates life has been a happy one. Other than a minor blip in 2003, she hasnt had to worry about aliens bothering her or her son. Indeed, her biggest concern is Gordys first girlfriend. But it all changes when a face from her past appears, bringing with him a warning. Gordy and his cousin Conall are kidnapped by a radical group calling themselves the Followers of Maitreya! The Brigadier and Kate join forces with Douglas Cavendish and Anne Travers on a mission to save Gordy and Conall, which leads them to the ruins of Det-Sen Monastery in Tibet where deadly Yeti roam, and a prophecy is about to fulfilled! What connects the Followers of Maitreya to a developing online school, Asteroid 4179 which is heading towards Earth, and the Brigadiers family?