On Amity Island, Martin Brody, renowned for his role as the police chief, passes away from a heart attack. His widow, Ellen, continues to live there, remaining close to her younger son, Sean, and his fiancée, Tiffany. Sean works as a deputy and is dispatched a few days before Christmas to remove debris from a buoy—later identified as part of the wrecked vessel Orca. While carrying out this task, a great white shark unexpectedly attacks him, severing his arm. Although he shouts for help, his cries are drowned out by the festive caroling onshore. The shark capsizes his boat and drags him into the water, ultimately killing him.