Nagasaki, August, 1945. Kazuo, a young Westerner who has settled in Japan, and Junko, the beautiful daughter of a flower arrangement designer, have agreed to meet on a hill to seal their teenage love with a haiku that hides a secret about their relationship. Minutes before the time for their meeting arrives, the atomic bomb turns the city into the worst of all hells. Tokyo, February 2011. Emilian Zäch, a Swiss architect whose life is gradually unravelling, UN advisor and defender of nuclear energy, meets a gallerist of Japanese art who is obsessed with tracing the old flame of one of her ancestors. With this two parallel stories and the surprising way they converge, Andrés Pascual weaves a moving tale about the importance of understanding the past in order to face up to the challenges of the present and to write our own destiny.