Jonathan Parks never thought he would witness the end of the world. He never thought he would be the cause of it. England faces utter ruin when a viral pandemic erupts in Central London. Within hours of infection, citizens become ravenous creatures seeking to feed upon and infect any living thing they can find. Swiftly they break through Armed Response teams and military units, leaving an ever widening swathe of devastation and chaos in their wake. What started simply with one boy, may now scour the entire globe. As Britain desperately tries to contain the plague, foreign powers seek to isolate themselves, while their clandestine intelligence agencies race to find the boy who may be the world's only hope for finding a cure. \*CRISIS SEQUENCE picks up where DESCENDANTS SAGA: VENDETTA left off...

While plague zombies rage through the streets of London and begin their conquest beyond Britain, Jonathan, Holly, Cassie, and Garth try to stay alive. Vladimir Nesky seeks to complete his mission for Russia by apprehending Patient Zero before MI6's Director Sayers and her special forces team can steal him away to secure a cure for the virus for Britain. However, what no one realizes yet is that these ravenous zombies are changing, becoming lethargic and slow, desiring to feed more than infect so they can hybernate away in the dark, for they are becoming something else...something cunning and deadly that is no longer human. And who is the mysterious supernatural Watcher? How is he connected to Jonathan and the others and will he use his power to save or destroy them?

DESCENDANTS SAGA FINALE!!! London is a dead zone. Jonathan and his friends are being held within the GCHQ while a horde of mutated plague zombies surround the compound. Brody West must find a way to save his grandchildren from this plague and the malevolent spirit responsible. Meanwhile, a powerful Superomancer has his own plans for Jonathan Parks.