Battleship is a American military science fiction action film based on the board game of the same name. In the film, the crews of a small group of warships are forced to battle against a naval fleet of extraterrestrial origin in order to thwart their destructive goals. In , potentially habitable "Planet G" is discovered, and in , a communications array to reach any extraterrestrial life is built in Oahu.
Six years later, Alex is a lieutenant aboard the USS John Paul Jones and in a relationship with Sam, a physical therapist working with wounded veterans. While Stone is a model officer commanding the USS Sampson , the rebellious Alex, while showing plenty of potential, is facing a disciplinary discharge. Their communications ship hits a satellite and crashes through the Bank of China Tower in Hong Kong , while the others plunge into the waters off the coast of Hawaii.
Hiking near the communications array, Sam and retired US Army lieutenant colonel and double amputee Mick Canales discover the aliens' presence. They encounter scientist Cal Zapata, who reveals the aliens have taken over the array to re-establish communications with their home planet.
More aliens board and retrieve their comrade while one starts sabotaging the ship. The third proves too elusive, so they lure it into facing east as the sun rises. Alex and Nagata shoot out its bridge windows with sniper rifles, blinding its crew with sunlight and allowing John Paul Jones to destroy it.
The destroyer then attempts to target the communications array, but is sunk by drones launched from the alien structure emitting the force field; Alex, Nagata, and several other sailors barely escape. The floating structure is revealed to be a giant mothership, but Missouri disables the force field, allowing Admiral Shane to scramble fighter jets from the aircraft carrier USS Ronald Reagan.
