Tomas Quinlan's penalty after 80 minutes won Ireland U20 a scrappy 18-16 victory over Argentina U20 in dramatic fashion in Parma.
Argentina grabbed the only try of the game at the start of the second half through Santiago Portillo but the boot of Joel Carberry kept Ireland right in the contest throughout.
Emiliano Boffelli's three-pointer looked to have secured the win for Argentina late on, before Quinlan struck in thrilling fashion with his touchline penalty to take the win away from the South American side, who were led impressively by Bautista Ezcurra.
Fly-halves Carberry and Domingo Miotti traded early penalties to put both sides on the board, but was Ireland who enjoyed more chances early on as Sam Arnold went close chasing a cross-field kick.
That close shave gave Argentina some impetus as they marched upfield and Miotti executed an outstanding drop goal with a sweet strike after his pack had rumbled their way forward with a maul.
Fresh with confidence Miotti attempted a long-range penalty but he couldn't find the posts this time, with Argentina then penalised at the ruck for Carberry to add a second penalty.
Argentina's indiscipline cost them right on the stroke of half-time at the scrum, Carberry's third penalty giving Ireland a 9-6 advantage.
Coming out in the second half with renewed purpose, Argentina scored the game's first try through Portillo. Miotti broke the defensive line with a straight carry before good hands from the South Americans were rewarded with a try to put them into the lead for the first time.
Carberry however remained accurate off the kicking tee, with two penalties putting Ireland infront again at 15-13 going into the final quarter.
Ireland's patience in attack was crucial as they forced penalties out of their opponents but Carberry couldn't add a sixth penalty when the chance came, despite his effort going incredibly close.
Argentina were eventually rewarded for their forward effort with a penalty from full-back Boffelli as Ireland went offside, but the drama wasn't over.
The replacement Quinlan knocked over a remarkable penalty from out on the touchline with his left foot to snatch the victory, making it 18-16 as Ireland triumphed.
Pens: Carberry 5, Quinlan
Pens: Miotti, Boffelli
Drop Goal: Miotti
Ireland: 15 Billy Dardis, 14 Ciaran Gaffney, 13 Garry Ringrose, 12 Sam Arnold, 11 Stephen Fitzgerald, 10 Joey Carbery, 9 Nick McCarthy (c), 8 Lorcan Dow, 7 Rory Moloney, 6 Josh Murphy, 5 Alex Thompson, 4 David O’Connor, 3 Oisin Heffernan, 2 Zack McCall, 1 Jeremy Loughman.
Replacements: 16 Sean McNulty, 17 Andrew Porter, 18 Conan O’Donnell, 19 Jack Dwan, 20 Nick Timoney, 21 Charlie Rock, 22 Tomas Quinlan, 23 Jacob Stockdale.
Argentina: 15 Emiliano Boffelli, 14 Eugenio Achilli, 13 Tomás Granella, 12 Bautista Ezcurra (c), 11 Santiago Resino, 10 Domingo Miotti, 9 Lautaro Bazán Vélez, 8 Ernesto Olmedo, 7 Lucas Gasparri, 6 José Deheza, 5 Ignacio Larrague, 4 Vittorio Rosti, 3 Cristian Bartoloni, 2 Ignacio Calles, 1 Javier Díaz.
Replacements: 16 Gaspar Baldunciel, 17 Nicolás Ocello, 18 Eduardo Bello, 19 Ignacio Calas, 20 Santiago Portillo, 21 Patricio Baronio, 22 Ignacio Albornoz y 23 Juan Cruz Mallía.