Save the Last One is the story of two families who learn that the nuclear holocaust has begun. With time running out, the Callaghan’s and Guthrie’s are thrust into a world of chaos where the only chance for survival is in a toxin called Phylenthium. Created by the US Government, the serum places its user in a death like state for one year—but nearly everyone who has taken it has died. Despite its dangerous side effects, Seamus Callaghan makes the bold decision to use this drug on his only child Julie. Meanwhile Marissa Guthrie, wife of the dangerous and equally persuasive Duncan Guthrie is faced with a heart wrenching decision of her own. As the world comes to its final conclusion, both families must find a way to survive long enough to Save the Last One.