Paris Saint-Germain are on their way to a Champions League semi-final.

It's the first time in 25 years that the French side have qualified for the final four and they did it the hard way against Atalanta.

Two late goals from Marquinhos and Eric Maxim Choupo-Moting secured an unexpected victory for Thomas Tuchel's side after Mario Pasalic had put Atalanta 1-0 up in the first-half.

Neymar was the star of the show in Lisbon, but the game was also changed by the introduction of Kylian Mbappe on the 60-minute mark.

The French striker replaced the ineffective Pablo Sarabia and PSG were transformed as an attacking unit almost instantly.

PSG players celebrate

Mbappe took the game to Atalanta's defence and delivered the assist for Choupo-Moting's dramatic late winner.

You can watch the highlights from Mbappe's game-changing cameo below.

Not a bad Plan B to have, eh?

Had Tuchel been unable to call upon the 21-year-old last night, it's likely the PSG squad would be on a flight out of Lisbon today.

In the BT Sport studio after full-time, Glenn Hoddle was full of praise for Mbappe's impact on the game, saying: "Mbappe was the one who changed it - Neymar needed him.

"Neymar's cutting edge wasn't there but it's the run off the ball, no one was making the movement. Mbappe was so sharp."

Mbappe & Neymar

Fellow pundit Rio Ferdinand echoed the thought of Hoddle, adding: "That's what I love about Mbappe, the decision making, the skills, he makes the right decisions."

Tuchel will now be hoping to have Mbappe fully match fit ahead of the semi-finals next week., where the French side will face either RB Leipzig or Atletico Madrid.

Without the World Cup-winning forward, PSG are way too reliant on Neymar and as good as the Brazilian is, he cannot deliver Champions League glory on his own.