Shock Waves

Shock Waves is a 2011 horror film and a remake of the 1977 horror film of the same name.

Plot
A group of men on a boat spot a small rowboat drifting through the ocean and discover a shocked and exhausted woman named Ann inside. As she is warmed up and calmed down, Ann begins to recount the events which led to her current situation.

Ann was part of a group of people on board a luxury yacht. The other passengers included Norman and Helen, a bickering married couple and a wild eyed man named Mike (who secretly harbours a cocaine obsession) as well as the ship cook Danny, first mate Renny and the captain. During their trip, their equipment suddenly went haywire and they spied an eerie glow in the distance. As tensions ran high during the crew, they were suddenly struck by hulking ship. The captain sent up a flare, unveiling a decaying old ship near to them.

The next morning, the captain went missing and they found that the boat was taking on a dangerous amount of water. Everyone evacuated onto a lifeboat and made their way to an island they spotted in the distance. They also learned that the captain seemingly drowned while checking the underside of the boat for potential damage following the collision.

The group explored the island and came across a ramshackled hotel and a decrepit old man living there. The group were suspisicious and didn't trust him. Danny went to find food but is mangled by a cluster of sea urchins. Ann then discovered his body and the group confronted the old man.

The man revealed himself as a missing war criminal and explained his dark past. During the Second World War, the Nazis comissioned a secret project, the goal of which was to create an army of super soldiers, with which they could conquer the world. The few prototypes that survived the early stages proved hard to control. The commander happened to be positioned on board a ship carrying them when they received word that Germany had been defeated. Disgraced, he sank the ship and escaped to the island, being presumed to have drowned. He also elaborated that he was isolated on the island as a storm had permanently disrupted his radio, trapping them on the island. The commander then escaped to a nearby stream, where he was attacked and drowned by the risen troopers.

Remembering a boat he told them about, the group decided to try and find it and escape the island. They located it, but it became stuck on a mud bank and as Norman tried to shift it, he was dragged away and drowned. Ann made a run back to the hotel but was grabbed by a zombie. She managed to rip it's goggles off, temporarily blinding it. Renny then pushed it down a flight of steps.

The survivors barricaded themselves inside of the hotel by using an oversized refrigerator to reinforce the door. However, the high tension began to cause them to bicker and it escalated. Mike, suffering from withdrawal symptoms, attacked Renny and retrieved a flare gun, forcing Renny to open the door to let him out, but not before he fired the gun and blinded Helen. Now vulnerable, the group attempted to take to better shelter. Helen, unable to see, managed to lock herself into a closet while Renny and Ann escaped into the furnace room. Mike was cornered by the zombies in the swimming pool, where he was killed.

The next morning, Renny and Ann decided to try and escape the island, as they knew were the boat was. They discovered Helen's body in a large aquariam before fleeing. They found that their planned escape boat had been torn apart but raced back to the hotel and found a tour boat with a glass floor. The two made it to the sea shore, where they were attacked by a zombie. Renny jumped underwater, pretending to be dead, allowing him to get the jump on the zombie, who he strangled with it's own goggles.

As Renny climbed back into the back, he was pounced on by another zombie, which dragged him underwater. Ann then witnessed Renny's body passing by through the glass floor. As the zombie reemerged, she managed to beat it to death with the ore. Ann was then cast adrift.

The story picks back up with Ann, now in a hospital, scribbling nonsense in a notebook while her inner monologue begins to repeat.