Ale is about to get married. His two best friends, Tom and Zenone, arrive at the ceremony and, prompted by Sara, a curious bridesmaid, begin to tell the story of what was supposed to be the perfect bachelor weekend. But when Ale shows up with his sarcastic fifteen-year-old sister Viola, everything changes. No luxury hotel, no excess: just camping tents, mountain trails, and a lot of (emotional) endurance. Alternating between present and flashback, between jokes and internal breakdowns, the protagonists discover that growing up is scary, but doing it together might just make it easier.