The Immortalists is the story of two eccentric scientists struggling to discover medical breakthroughs to create eternal youth. And yet they fight to gain support for their cause in our world, which they call a world "blind to the tragedy of old age." Bill Andrews is a lab biologist and famed long-distance runner racing against the ultimate clock. Aubrey de Grey is a genius theoretical biologist who conducts his research with a beer in hand. They differ in style and substance, but are united in their common crusade: to cure aging or die trying. They publicly brawl with the old guard of biology who argue that curing aging is neither possible nor desirable. As Andrews and de Grey battle their own aging and suffer the loss of loved ones, their journeys toward life without end ultimately become personal.