In a seaside town, a group of friends passionate about fishing and adventure decides to embark on a peculiar journey in search of an ancient submarine that, according to legend, is hidden in the depths of the sea. The proposal arises during a night of drinks, when one of them, a hopeless dreamer, mentions a rumor about a lost treasure and military secrets that the submarine might contain. Without thinking twice, the group, made up of a carefree artist, a technology-obsessed engineer, and a cynical war veteran, plunges into a series of mischiefs and conflicts that test their friendship.
As they navigate, tensions among them surface, revealing old grudges and hidden desires. The quest leads them to discover not only clues about the submarine but also truths they have been avoiding in their lives. Moments of comedy arise from their failures, while the angst of the sea adds an air of risk to their adventures. However, when they finally locate the submarine, they face a moral dilemma that could change their friendship forever. Should they risk it all for a treasure that could not only change their lives but also bring unforeseen consequences? Amid laughter, tears, and difficult decisions, the group discovers that sometimes, what truly matters is not the destination, but the journey.