In a picturesque coastal village, life flows calmly until a mysterious lighthouse, which has remained inactive for years, resumes its signal. This unusual event draws the attention of a young engineer passionate about light and technology. Along with a group of friends, he decides to investigate the origin of this signal, which seemingly is a projection of an ancient love thought to be lost in time.
As the haunting light guides the fishermen's boat towards a dangerous reef, the protagonist finds himself entangled in a web of intrigue, old secrets, and an unexpected romance. The single mother of the lighthouse keeper, filled with determination, shares stories about the love of her life, who mysteriously disappeared at sea. This connection between the past and the present drives the engineer to solve the lighthouse's enigma, but he is not the only one with interests in the signal. A group of speculators is also looking to take advantage of the situation, generating tension and confrontations.
As the mystery unfolds, the friends uncover a series of clues that lead them to a surprising revelation. The film captures the essence of hope, sacrifice, and the search for true love, all wrapped in suspense and nostalgic atmospheres. In an exhilarating climax, the characters confront their fears and longings, while the lighthouse shines more brightly, illuminating the path to their destiny.