On a romantic getaway, a couple decides to enjoy a vacation at an idyllic diving destination in the Caribbean. The opportunity to explore the crystal-clear depths of the ocean seems perfect, and everything goes well until, after a dive, they realize that they have been forgotten and abandoned by the rest of the group. With the boat far away, alone in the vast and feared ocean, fear begins to take hold of them.
As they float in the water, the couple tries to remain calm and plan their next move. Hours pass, and uncertainty turns into desperation. Surrounded by an infinite sea, the sun begins to set, and reality becomes increasingly terrifying as they start to perceive the presence of sharks circling around them. The couple's fighting dynamic reveals the hidden tensions in their relationship, while their survival hangs in the balance.
As time runs out and danger intensifies, they face not only the external threat of the sea creatures but also their own internal fear and struggle for hope. The harrowing journey becomes a reflection on love, trust, and the fight for life in an environment where every minute counts. In this struggle to escape unease and desolation, the narrow limits between what it means to be alive and to be truly free are revealed.