The tournament favourites, Borussia Dortmund, were left shell-shocked as Jürgen Klopp's Liverpool came from behind to win 4-3 on yet another dramatic European night at Anfield.
Early goals from Henrikh Mkhitaryan and Pierre-Emerick Aubameyang propelled Dortmund to a solid position. Divock Origi and Marco Reus exchanged goals in a short space of time before strikes from Philippe Coutinho, Mamadou Sakho and Dejan Lovren sealed the comeback.
Lightning strikes twice
It took just a matter of minutes. Following Thomas Tuchel's orders to relentlessly attack straight from the off, the visitors struck instantly on the back of a fluent counter-attack: Coutinho's poor pass was picked up and Dortmund broke ruthlessly; Simon Mignolet did well to snuff out a close Aubameyang effort, after a brilliant looping pass from Gonzalo Castro, but was helpless to deny Mkhitaryan from opening the scoring with a simple tap-in.
The home side had little respite following the restart and, within a moment, Dortmund struck again. Reus showed why he's regarded as one of the best footballers in the world after scything through a porous opposing midfield while threading a pass through for Aubameyang who made no mistake to stun the Kop and double the scoreline.
Sizzling second half
After being stunned, Liverpool finally started to get their act together. However, tempting crosses from Roberto Firmino and captain, James Milner, came to no avail and the Kopites continued to waste good chances.
Dortmund looked to put the game beyond doubt and very nearly done so on two occasions within close proximity. Piszczek and Reus burst into the box, but Aubameyang was unable to convert any of the well-worked pull-backs.
Just like in the first-leg, the home side wasted no time in scoring an important goal. Roman Weidenfeller had little to do in the first-half, but moments after the restart Origi, who scored at the Westfalenstadion, latched onto an impressive pass from ex-Leverkusen midfielder Emre Can to slip it under the veteran goalkeeper and deliver hope to those at Anfield.
Such hope was all but snuffed out, however. Mats Hummels surged forward and delivered a pin-point perfect through ball for Reus who side-footed home to restore his side's two-goal lead, in front of the exuberant die Schwarzgelbe fans.
Another famous comeback at Anfield
But this is Anfield, hope is the lifeblood of the club.
The home side showed no signs of going down peacefully. Coutinho made amends for his early mistake by firing the Reds back into the match after some magical interlinking play with Moreno and Milner.
Wasteful corners had long been a problem for the Merseysiders all season. Tonight was no different, until O Magico stepped up, yet again. Slack Dortmund defending allowed the Brazilian to easily find an unmarked Mamadou Sakho, who made no mistake in levelling the scoreline. The tide had turned.
Four minutes was thrown up on the digital board, but the home side only needed one. A clever free-kick exchange from Milner and Sturridge saw the captain deliver a tempting cross deep in the box where Dejan Lovren was on hand to send the Kop wild with the winner and an appropriate slide celebration to mark the occasion.
Undoubtedly, one of the most breathtaking matches you're ever likely to see on a European night, it pushes Liverpool into the semis and closer to more European glory.
Things aren't all doom and gloom for Dortmund, though. Tuchel's men have already booked their place in next season's Champions League and are well within contention of winning the DFB-Pokal, in what has been a strong season getting back to where they rightfully belong.