The 69th Four Hills Ski Jumping Tournament sees the best jumpers in the world gather at four venues in Germany and Austria around the turn of the year.
It starts on the Schattenberg hill in Oberstdorf with the first competition proper taking place on Tuesday (29 December) as the men take in four events in nine days.
The opener usually attracts close to 40,000 spectators but, this year, the party atmosphere will be missing with no fans allowed due to the COVID pandemic.
The grand finale is in Bischofshofen, Austria on 6 January.
While part of the World Cup, this tournament also stands alone with Poland's Dawid Kubacki the reigning Four Hills champion.
There was dramatic news on Monday as the entire Polish team was barred from qualification after Klemens Muranka tested positive for COVID on Sunday.
But on Monday evening, the whole team - including Muranka - all tested negative and were cleared to compete on Tuesday.
Scroll down for everything you need to know on when, where, and who might achieve a fourth 'Grand Slam' since the tournament's birth in 1953.
When and where: Four Hills Tournament 2020-21 Dates
The four competitions will take place in:
Obertsdorf (28-29 Dec)
Garmisch-Partenkirchen (31 Dec - 1 Jan)
Innsbruck (2-3 Jan)
Bischofshofen (5-6 Jan)
Who: Four Hills Favourites
There's no doubt who the favourite is right now:
Eisenbichler will be keen to quell the Norwegian's uprising on home snow after winning the first two World Cup events in Ruka and Wisla.
But the battle for the Four Hills is far more than a two-horse race.
Granerud himself was talking down his own abilities after his fifth straight win in Engelberg telling FIS, "I don't make extremely good jumps, the jumps are stable, but they are not outstanding."
Can he handle the pressure of being the hot favourite? And who else is in the reckoning?
Karl Geiger was the last man to beat Granerud, edging out the Norwegian in Planica by just 0.5 points to win the individual ski flying world title.
New father Geiger was born in Obertsdorf but missed the two competitions in Engelberg after testing positive for COVID.
The 27-year-old has been selected by the German team with national coach Stefan Horngacher telling Frankfurter Rundschau, "Karl has been symptom-free since the positive test. He is highly motivated and has kept fit and trained during the quarantine."
Two-time Four Hills and three-time Olympic champion Kamil Stoch, who had his first individual podium finish of the season last weekend, and Piotr Zyla are expected to challenge along with Japan's talented Sato Yukiya.
Stoch is one of just three men in history to win the Four Hills Grand Slam.
Germany's Sven Hannawald was the first, weeks before winning Olympic gold at the 2002 Salt Lake City Olympic Winter Games, with Stoch repeating the feat in 2017-18.
1. Obertsdorf: Opening Jump
The fireworks start on the famed big Schattenberg hill at the World Cup Ski Jump Arena in Oberstdorf, and winning on Day 1 often proves crucial to the outcome of the overall tournament.
Some 2,500 tickets went on sale and were snapped up like hot cakes, but organisers have had to cancel plans to host spectators due to rising COVID case numbers.
Tickets have been refunded and fans will have to enjoy from home.
And there will be plenty to enjoy.
Kobayashi is seeking a hat-trick of wins, taking the Four Hills opener after his previous season's Grand Slam, but has failed to break into the top 10 in a lacklustre campaign so far.
Norway's Sigurd Pettersen holds the hill record of 143.5m, which he set in 2003.
2. Garmisch-Partenkirchen - New Year's Day Jump
Ski jumping fans will ring in the New Year at Garmisch-Partenkirchen which was built prior to the Olympic Games in 1936 and updated in 2007.
The fusion of a historic hill, award-winning architecture and the latest in cutting-edge technology make this a unique arena for ski jumping's high wire walkers.
Norway's Marius Lindvik is the defending champion having set a new hill record of 143.5 m 12 months ago.
3. Innsbruck: Bergisel ski jump
The second half of the Four Hills begins at Bergisel ski station Innsbruck, Austria with its futuristic start tower designed by prestigious architecture firm Zaha Hadid.
Dawid Kubacki was king here last year, and went on to take the Four Hills tournament crown.
Happy memories could upset the odds and lift him to another victory here.
The hill record is 138m and held by home favourite Michael Hayboeck who made the leap in January 2015.
4. Bischofshofen: Epiphany jump
The Paul-Außerleitner Ski Jump is the perfect ending to the Four Hills Tournament, a jump nestled in natural beauty at the foothill of the Hochkönig mountains.
At the end, the overall winner of the Four Hills receives the golden eagle trophy.
Kubacki is also the reigning champ in Bischofshofen with the Pole sailing out to a record-breaking 145m 12 months ago.