Stephen Hawking’s dead. Martin’s having a breakdown. And Ellie? She’s feeding the fish… When Martin hears that the world’s greatest scientist has died, he falls over the edge. With Hawking gone, who’s going to work out who we are, where we come from and why we’re here? Luckily for him, chance – or destiny? – has thrown him into an aquarium with Ellie, a PhD student specialising in astrophysics. As the fish swim in circles, so the two run the course of science, philosophy and theology as they search for the meaning of life – if such a thing exists at all.