The 2018 NRL Grand Final was the conclusive and premiership-deciding game of the 2018 National Rugby League season and was played on Sunday September 30 at Sydney's ANZ Stadium.

The sides faced each other only once during the regular season, with the Storm edging out a 9-8 victory over the Roosters at Adelaide Oval courtesy of a Cameron Smith field goal.

Having a double home game advantage, both teams defeated the third-placed Rabbitohs and fourth-placed Sharks to earn a week off from the semi-finals and a place into the grand final.

In the preliminary final, they defeated the Rabbitohs 12-4 in front of a record crowd of 44,380 in the last ever NRL game held at Allianz Stadium before its scheduled knock-down and rebuild.

Brodie Croft, Joe Stimson, Christian Welch, and Brandon Smith were the only new additions to the Storm's grand final winning squad from the previous year.

Daniel Tupou, Jared Waerea-Hargreaves, Jake Friend, Boyd Cordner, and Mitchell Aubusson were the last remaining members from their 2013 premiership winning squad, while Frank-Paul Nu'uausala wasn't selected to play.