Borussia Dortmund scored twice in stoppage time to defeat Malaga 3-2 on Tuesday and advance to the Champions League semifinals for the first time in 15 years.
Trailing 2-1 as three minutes of added time began, Dortmund equalized through Marco Reus but Malaga still held the away goals advantage.
That all changed, however, when Felipe Santana scored from what looked to be an offside position following a goal-mouth scramble in the last minute of play, setting off scenes of delirium among the local team and crowd.
''I think I need to see a doctor. It feels like we've won the trophy,'' Dortmund coach Juergen Klopp said. ''My assistants and me were looking at each other in shock in the dressing room and saying, `This is crazy'. This is the best I've ever felt.''
Dortmund defender Neven Subotic was almost lost for words.
''I just can't really believe it,'' he said. ''This is the craziest moment in all of my footballing career.''
Following a 0-0 draw in the first leg of the quarterfinals, Malaga led with its first shot on goal through Joaquin in the 25th minute.
Dortmund's defense failed to clear, and Santana could only head the ball as far as Julio Baptista. It went from Isco to Joaquin just outside the penalty area. The Spaniard cut inside a defender and shot through Neven Subotic's legs inside the right corner.
Robert Lewandowski pulled one back in the 40th but Dortmund still needed another goal to progress.
Instead, Malaga substitute Eliseu thought he had decided it in the 82nd with another goal that looked offside, only for Dortmund to complete its remarkable turnaround.
The German side, which surrendered its Bundesliga title to Bayern Munich on Saturday, remains the only unbeaten side left in the competition. Dortmund last reached the semifinals in 1998, the year after it won the title.
Under coach Manuel Pellegrini, Malaga was trying to become the first team to reach the semifinals in its first Champions League campaign since Villarreal in 2006, also coached by Pellegrini.
''We're still trying to come to terms with what happened,'' Malaga forward Roque Santa Cruz said. ''We were four minutes away from the semis. There is huge disappointment in the dressing room. We had the tie in our hands.''
Lewandowski had the game's first big chance when his attempted chip over the goalkeeper floated just over the bar in the 16th.
Dortmund created numerous half-chances but failed to really threaten, with the impressive Martin Demichelis using all his experience to marshal the visitors' back line.
The equalizer, when it came, was sublime. Mario Goetze dinked the ball over for Reus, who back-heeled it first time into the path of Lewandowski, and the Poland striker lifted it over the outrushing goalkeeper before slotting under pressure to the empty net.
Joaquin might have scored another before halftime but headed straight at goalkeeper Roman Weidenfeller from a promising position.
Lewandowski then had a good chance after the break but fired straight at Willy in the Malaga goal, before Weidenfeller made a flying save from Joaquin's header at the other end.
Goetze fired his volley wide from a difficult position, and Lewandowski had a goal ruled out for offside as the home side desperately sought the goal it needed.
Willy made two outstanding in the final 15 minutes, first to deny Reus from point blank, when the rebound flew just wide of the post, and then to foil Goetze when it seemed the Germany international had to score.
TV replays appeared to show Eliseu in front Baptista when the Brazilian fired past Weidenfeller, but the goal stood after the Malaga substitute knocked in the goal-bound shot.
It looked like too little too late when Santana set up Reus to equalize, only for the Brazilian defender to follow up in fairytale fashion.
