Ellen Brody still lives in the island resort town of Amity, and her sons Sean and Michael don't work at Sea World anymore, and some time ago, Ellen's husband Martin Brody died of a heart attack that happened because he was afraid of sharks. Sean is now a deputy in Amity. One night, during the Christmas season, Sean is called to untangle a log from a buoy, and when Sean goes to the buoy, he's killed by a great white shark.