Nineteen years after Donegal pulled off a major upset, they return to Croke Park to attempt to scupper Dublin's All-Ireland hopes again.
Memories of that famous 1992 decider have understandably come flooding back, with ex-players from both counties doing the media circuit and recalling their experience of the day.
The general consensus was that the Dubs were just a little too cocky in the build-up and weren't able to react quickly enough to match the excellent performance of Brian McEniff's charges.
Now, as then, Dublin head into the game as overwhelming favourites.
However, their manager Pat Gilroy has first-hand knowledge of the events of '92 and will have been at pains to ensure the same malaise doesn't affect the current squad.
Gilroy has decided to make no changes to the side that batted Tyrone away in the quarter-final. A lot has been made of the paucity of the Red Hands' performance, but even at their best the Ulster side would have struggled to cope with one of the stand-out displays of the year.
Some have questioned the quality of the Dublin forward division, suggesting that the Metropolitans could be held just by taking the Brogans out of the game.
However Diarmuid Connolly came of age in a Dublin shirt on 6 August by finally delivering on his huge potential.
The St Vincent's clubman landed 0-7 from play against Tyrone and he will be expected to back that up with another decent return on Sunday. His greatest strength is his ability to adeptly kick off either foot.
Donegal's defensive set-up means Dublin are likely to be forced to kick from distance and/or from difficult angles. With his confidence at an all-time high, Connolly should be up for that challenge, and we could be treated to another scoring masterclass.
But it will take a magnificent effort to overshadow the point that Kevin Cassidy landed against Kildare to secure Donegal's place in the last four.
But Cassidy is just one cog in arguably the best half-back line in the country at the moment. Karl Lacey may have won his two All-Stars for his heroics at corner-back, but he has made the number six jersey his own this year and remains one of the most comfortable players in possession you are ever likely to see.
While Cassidy and Lacey are well known after their efforts over the years, their half-back colleague Anthony Thompson is a relatively new face on the inter-county scene.
The Naomh Conaill clubman is an unassuming player, but he has been extremely effective this season and has developed a habit of popping up with crucial scores.
If Dublin are to reach their first All-Ireland in 16 years, they will have to find a way of getting the better of Donegal's best line of defence and first line of attack.
And while there has been much reference made to Dublin's lack of recent success, it must not be forgotten that Donegal have not exactly been living the high life since their breakthrough year. It has taken them until this year to put their name on the Anglo-Celt Cup again.
But they have been steadily accruing silverware. They won their first-ever Division 1 league title in 2007 and collected McKenna Cups in 2009 and 2010 before winning Allianz League Division 2 earlier this year.
There has also been some success at Minor and U-21, with Ulster titles at those levels in 2006 and 2010 respectively.
So there is no doubt that Donegal are heading in the right direction, but it is not unreasonable to suggest that this is as far as they can go at this stage of their development.
Dublin, on the other hand, need this win badly. They have lost four All-Ireland semi-finals since they last claimed Sam Maguire in 1995 and should have beaten Cork in last year's semi.
And with Kerry not the imperious force they once were, this year offers them a fantastic opportunity to end a generation of hurt.
While there is plenty of youth in Gilroy's starting XV, the likes of Stephen Cluxton, Bryan Cullen, Barry Cahill and Alan Brogan have had enough crushing defeat throughout their careers to ensure that they will want not to experience another one.
