On an island off Costa Rica there exists a hush-hush colony of giant animals which attracts the attention of two expeditions. The first one, including children, is led by a paleontologist, the other is made up of evil scientists who want to do experiments. The animals rout both without much concern for their motives.

"Fifty years after The Andromeda Strain made Michael Crichton a household name, the threat returns, in a gripping sequel that is as terrifyingly realistic and resonant as the original"-- In 1967, an extraterrestrial microbe came crashing down to Earth and nearly ended the human race. Accidental exposure to the particle, designated The Andromeda Strain, killed every resident of the town of Piedmont, Arizona, save for an elderly man and an infant boy....

Four years after the destruction of Isla Nublar, dinosaurs now live and hunt alongside humans all over the world. This fragile balance will reshape the future and determine, once and for all, whether human beings are to remain the apex predators on a planet they now share with history's most fearsome creatures in a New Era. Two generations unite to fight in the battle between humanity and the prehistoric past.