A father, his son and some friends spend a weekend by the sea, but relationships worsen and tensions rise to the rhythm of the ever-changing tides.A father, his son and some friends spend a weekend by the sea, but relationships worsen and tensions rise to the rhythm of the ever-changing tides.A father, his son and some friends spend a weekend by the sea, but relationships worsen and tensions rise to the rhythm of the ever-changing tides.