Ireland cruised into their first World U20 Championship final thanks to a 37-7 victory over Argentina in Manchester.
The Irish surged clear with two Jacob Stockdale tries and one from Max Deegan, although Juan Cruz Mallia went over just before the break.
Ireland led 21-7 at half-time and Argentina's hopes ended with Santiago Pulella's red card for a headbutt.
Shane Daly added a fourth Irish try in the dying seconds and they now look ahead to the decider on Sunday.
Ireland have been outstanding in the tournament, beating Wales and holders New Zealand.
They progressed to the semi-final by finishing top of their pool following a 35-7 success over Georgia.