Bella et Vipulan ont 16 ans, une génération persuadée que leur avenir est menacé. Changement climatique, 6ème extinction de masse des espèces... d’ici 50 ans leur monde pourrait devenir inhabitable. Ils ont beau alerter mais rien ne change vraiment. Alors ils décident de remonter à la source du problème : notre relation au monde vivant. Tout au long d'un extraordinaire voyage, ils vont comprendre que nous sommes profondément liés à toutes les autres espèces. Et qu'en les sauvant, nous nous sauverons aussi. L’être humain a cru qu’il pouvait se séparer de la nature, mais il est la nature. Il est, lui aussi, un Animal...

Sixteen-year-old Logan is an adolescent uncomfortable in his own skin. Only his science fiction dreams of a better life on Mars draw him away from his ordinary life, which is as equally difficult at home or at school, where he's only seen as an aggressive loser. One evening, he receives a visit from a mysterious man who insists that he has come from the future and that he is also Logan, but forty years older. He then asks the younger Logan to carry out a mission as unexpected as it is important: to save humanity.

When an image-conscious wild child takes a strange new drug at a party, she undergoes a shocking transformation. Desperate to reverse the effects of the drug, she is horrified to discover that she has become the key to saving the human race.