Time

The Murry and OKeefe families enlist the help of the unicorn, Gaudior, to save the world from imminent nuclear war. In this companion volume to A Wrinkle In Time (Newbery Award winner) and A Wind In The Door, fifteen-year-old Charles Wallace and the unicorn Gaudior undertake a perilous journey through time in a desperate attempt to stop the destruction of the world by the mad dictator Madog Branzillo. They are not alone in their quest. Charles Wallace's sister, Meg -- grown and expecting her first child, but still able to enter her brother's thoughts and emotions by "kything" -- goes with him in spirit. But in overcoming the challenges, Charles Wallace must face the ultimate test of his faith and will, as he is sent within four people from another time, there to search for a way to avert the tragedy threatening them all. - Publisher.

Sandy and Dennys have always been the normal, run-of-the-mill ones in the extraodinary Murry family. They garden, make an occasional A in school, and play baseball. Nothing especially interesting has happened to the twins until they accidentally interrupt their father's experiment. Then the two boys are thrown across time and space. They find themselves alone in the desert, where, if they believe in unicorns, they can find unicorns, and whether they believe or not, mammoths and manticores will find them. The twins are rescued by Japheth, a man from the nearby oasis, but before he can bring them to safety, Dennys gets lost. Each boy is quickly embroiled in the conflicts of this time and place, whose populations includes winged seraphim, a few stray mythic beasts, perilous and beautiful Nephilim, and small, long lived humans who consider Sandy and Dennys giants. The boys find they have more to do in the oasis than simply getting themselves home--they have to reunite an estranged father and son, but it won't be easy, especially when the son is named Noah and he's about to start building a boat in the desert.