Leeds produced their best offensive performance of the season to stun holders and overwhelming favourites Wigan 39-28 and reach their third consecutive Challenge Cup final.
The Rhinos scored seven tries, four of them from wingmen Ryan Hall and Ben Jones-Bishop, to five in a breathtaking semi-final to avenge their defeat by the Warriors at Wembley last August.
Victory came just six weeks after the Rhinos suffered a 50-8 mauling at home by Wigan but this time they managed to keep a tight rein on danger man Sam Tomkins, largely through the magnificent kicking of captain Kevin Sinfield, the man of the match.
Leeds went into the game full of confidence after putting together a four-match winning run in Super League and how it showed as they got off to a blazing start with three tries in the first 10 minutes.
Hall set the scoreboard going just three minutes into the game, pouncing after Tomkins had uncharacteristically fumbled Sinfield's towering kick to the corner.
Sinfield's 40-20 kick then set up the position for Jones-Bishop to score his first try, taking centre Kallum Watkins' pass to touch down at the other corner.
Wigan could not get out of their own half at that stage and, when winger Josh Charnley lost the ball in Ryan Bailey's tackle on his own 20-metre line, the Rhinos struck again, with Jamie Peacock breaking through to get full-back Zak Hardaker over.
Sinfield added two of the conversions to make it 16-0 and Wigan's frustrations showed when Brett Finch was penalised for disputing referee Ben Thaler's decision to pull up his team for obstruction.
However, Finch quickly made amends by helping to create two tries in three minutes for George Carmont and Gareth Hock.
But Hall grabbed his second try, courtesy of a superb break and offload from McGuire and Bailey stretched out of a two-man tackle to plant the ball on the line.
Jones-Bishop then registered his second try, taking Sinfield's kick by his finger-tips and touching down with inches to spare.
Sinfield was off target for the third time and Wigan took advantage to get back to within two scores before half-time.
The outstanding Finch put substitute Liam Farrell through a hole in the Leeds defence and, although the final pass was poor, Ben Flower demonstrated quick thinking to hack the ball forward and won the race to touch down.
Tomkins kicked his third conversion and added a penalty on the stroke of half-time to make it 30-20.
Leeds gained further breathing space nine minutes into the second half when impressive second rower Brett Delaney burst through and got the supporting Hardaker over despite a suspicion of a knock-on by McGuire.
Wigan were still not finished, however, and skipper Sean O'Loughlin gathered Tomkins' kick to score his side's fourth try but they were also chasing the game.
Sinfield's 64th-minute drop goal effectively settled the tie but Wigan got their fifth try through Charnley but it was fitting that Sinfield should have the final say, putting over a last-minute penalty to wrap up the scoring.
Man of the match Sinfield was quick to deflect the credit to his forwards.
"It feels great," Sinfield said. "Five or six weeks ago we had 50 points put on us by the best side in the comp so to turn it around is awesome for us.
"I've got to give all our pack a big wrap. I'm just doing my job for the team. Our big men set a huge platform for us. They had a much tougher job than me."
Wigan coach Shaun Wane was left to lament his side's worst performance of the season.
"The bad start didn't help but we made too many errors throughout the game," he said.
"A few in the first half were uncharacteristic.
"I said before the game the team that completes best would win and that's what happened.
"It was our worst performance. We didn't turn up today. We've defended all year better than that.
"But take nothing way from Leeds. They wanted it more which to me is gutting. They've some real warriors in their team."