Welcome to August 1916. Alfie is about to be called-up to serve in WWI, when his younger sister Jemima disappears mysteriously. He summons twins Luke and Emma to help find her.
The twins, halfway through University in modern times and leading a carefree existence, have no choice but to go along with his outlandish plan. They are soon caught up in a deadly adventure involving a barren alien world and the wholesale kidnapping of young human children.
Desperate to save the children, and Humankind's very future, they must uncover the mystery surrounding the alien world and battle giant creatures in a deadly struggle for survival.