And after the first match, the loser in a party 3: 5, French has chances seemed theoretical, but home win 3: 1 gave it to the quarterfinals, "Monaco".
A co-ordinated attack on the Borussia Dortmund bus saw Marc Bartra injure his arm and Thomas Tuchel's side were clearly shook up once full details emerged of the incident.
Barcelona's Luis Suarez (right) and Alex Sandro of Juventus battle for the ball during their Champions League quarter-final, second leg match.
It was a frantic spell after Mbappe's opener, with Monaco's attacking midfielder Bernardo Silva heading straight at Burki from a good position and Dortmund's Nuri Sahin hitting the crossbar with a curling freekick.
Monaco reached the Champions League semi-finals for the first time since 2004 after an impressive second-leg performance in the last eight against Borussia Dortmund on Wednesday.
They had scored three times in the final seven minutes against PSG but there was no hint of anything similar this time as Juventus cruised into the last four.
By four minutes in, Monaco had Dortmund requiring a minimum of three goals to progress.
But substitute Valere Germain, just after replacing Mbappe, added the third in the 81st minute to seal a 6-3 victory on aggregate.More news: AIADMK rules out change in CM, Palaniswami to stay
The away defence backed off as Benjamin Mendy advanced and when the full-back's powerful left-foot strike stung the palms of goalkeeper Roman Burki, the 18-year-old Mbappe was on hand to convert the rebound.
The Ligue 1 outfit are [2.98], with Dortmund [2.34] - meaning Monaco are given a 34% chance of winning on the night while visitors Dortmund are rated a 43% chance. Understandably the events of last week are not to be forgotten but a team with the class and professionalism of Dortmund will be sure come out firing, especially since star man Marco Reus is set to make his return.
Leonardo Jardim's young Monaco side have swept aside all before them in the Champions League this season, entertaining as they go with a brand of fearless, attacking football that the Portuguese boss said before the tie is part of their "DNA".
Right-back Djibril Sidibe sat out last week's first leg and is still unavailable, while midfielder Fabinho is suspended.
Monaco doubled their lead in the 17th minute as Thomas Lemar picked out Radamel Falcao, who headed into the bottom corner from close range.
But any thoughts of a revival were ended by Germain, another replacement, as he converted following a swift Monaco break only 22 seconds after taking the field in place of Mbappe.
Dortmund were earlier left unimpressed by their delayed arrival, which the Bundesliga club said in a post on Twitter was because the bus had been stopped by police "for approximately 20 minutes without justification".
"We know that tomorrow is a final, it will be necessary to respect our principles of play".