How on earth did that happen?
Liverpool were supposed to bow out of the Champions League after succumbing to Lionel Messi in the first leg of their semi-final, but Jurgen Klopp's side had other ideas.
A remarkable, ridiculous comeback from the Reds turned their 3-0 deficit into a 4-3 aggregate win , as Divock Origi and Gini Wijnaldum both scored braces and Anfield went barmy in a way that hasn't even been seen there before.
That the Reds are now in the final is something that not even they would have envisaged before the game, but perhaps Arsene Wenger did.
Because the former Arsenal boss had a very particular Anfield warning for Barca before the first leg, for which he was working as a pundit for BeIN Sports.
Ernesto Valverde makes Barcelona admission after stunning Liverpool collapse
" Liverpool is strong where Barcelona is weak, for me," he said before that first match.
"Because if you don't score goals against Barcelona you're guilty. But Barcelona can score as well. That's what we have to see tonight.
"In Europe they do well. Why? Anfield.
Naby Keita rips off recovery pad in celebration at Liverpool's epic Barcelona win
"[For a] home game, this is the most heated stadium in Europe in a return game. It is the only place you don't want to go.
"The atmosphere - everything - is special there."
Well it certainly was on Tuesday night!
