Siren (2016)

When a group of friends gather to celebrate the upcoming wedding of their friend, little do they know that their fun-filled bachelor party will turn into a terrifying battle for survival. Unintentionally releasing a legendary predator into the midst of their festivities, the groomsmen must now band together and use all their wits to outsmart the fearsome creature and make it out alive. As the night descends into chaos and fear, they must confront their deepest fears and rely on each other's strengths to stand a chance against the ancient beast stalking them in the darkness.