An absurd law prevents John, an unrecognized child at birth, from knowing the identity of his biological parents before his 100th birthday. To succeed in attracting public opinion, his only hope is to obtain the complicity of Gustavo, the only unrecognized-at-birth centenarian alive. The only one who would have the right to avail himself of this legislation but seems to have no interest in doing so. The Most Beautiful Century of My Life tells of the meeting between a centenarian projected into the future and a young man anchored in the past and of their unexpected friendship.
Giacomo, the main character, 35 years of laziness, is a man who doesn't know and doesn't want to fight. He is a introvert curmudgeon, a little bit nerd but not very social, who walks with the look downward on his device without giving to the people what they would like from him: only a little bit of attention and enthusiasm. He loses his job, he is left by his wife and coincidentally he remains closed in the women's bathroom of the art-house cinema, together with the owner's small dog.