Is a fairytale finish looming for arguably the greatest player of all time, or will youthful exuberance and confidence take a special group of kids to the top?
Melbourne and Penrith will meet in the 2020 Telstra Premiership decider having been the two best teams all year, finishing second and first respectively.
All eyes are on Storm captain Cameron Smith. Will he retire after a peerless 430 matches across 19 seasons?
He's given nothing away despite the intense interest, but the scenes at Suncorp Stadium after Melbourne's preliminary final win over Canberra were perhaps indicative of a man bidding farewell.
The Panthers are shooting for 18 straight victories, led by star halfback Nathan Cleary and his father, coach Ivan.
Penrith are conceding vast experience to the Storm, but they're yet to be overawed as belief courses through them.
The last time the Panthers played in a grand final was 2003, when they collected the club's second title, while Melbourne have now made four of the past five deciders, losing in 2016 and 2018 and tasting success in 2017.
Panthers: Ivan Cleary has made a late switch with Tyrone May coming into the starting side at centre and Brent Naden reverting to the bench as he did in the preliminary final.
Viliame Kikau will return from a one-game suspension in the back row, with Kurt Capewell named on the bench and Mitch Kenny out of the 17.
Hooker Api Koroisau suffered a shoulder "burner" injury in last week's win over Souths but he is good to go.
Dean Whare and Spencer Leniu were omitted from the reserves list 24 hours before kick-off. Matt Burton and Kenny were the last two players cut an hour before game time.
The Panthers have the chance to equal their 2003 club record of 21 wins in a season.
Storm: The Storm will line up 1-17 with Tom Eisenhuth and Paul Momirovski the last two players cut an hour before kick-off.
Tui Kamikamica was ruled out 24 hours before kick-off, after missing several weeks with an ankle injury. Ryley Jacks was the other player to drop off the extended bench on Saturday.
The Storm boast 34 games of grand final experience, compared with three for the Panthers.
Cameron Smith v Api Koroisau. Smith's controlling influence is still unrivalled and his endless big-game experience - this will be his eighth grand final - could prove crucial. Koroisau's return to Penrith this year has been a key reason for their form and he was immense in the preliminary final, creating constant havoc by jumping from dummy-half.
Penrith beat Melbourne 21-14 in round six in what was the start of their winning streak. They've gone on to smash their previous club record of nine straight victories. But the Storm have had the wood on the Panthers overall, losing only three games against them since 2006.