Joel lives in the Waldens, an idyllic community in the heart of nature that rejects mobile phones and the latest technologies. Hoping to get closer to Alina, a newcomer who fascinates him, he starts sending letters to her house in his name. Everything goes well until a letter arrives that he has not written, the content of which suggests that the sender knows him better and more than he knows himself. As the relationship progresses, so do the misunderstandings and threats of a saboteur obsessed with separating the couple. Little by little, and without imagining it, Joel will become immersed in a world of mirrors where the reflection of oneself is more real than it seems.