When the last ice age ended about 15,000 years ago, the seasons also returned to Europe. Vast forests covered the entire continent - populated by countless species of animals and plants. The flora and fauna have to adapt to the constantly changing conditions, native species such as wild horses, wolves and bears are displaced by man, but nature always finds ways to develop in the new habitat.

The film recounts Guillaume's tragicomic battle from the young age of eight, as he adopts the role of a girl, then of a homosexual until, aged 30, he meets the woman who, after his mother, will become the other woman in his life. Beyond this story of a heterosexual coming-out, the film tells the tale of an actor who never stopped loving women, maybe even a little too much.