With pool games to follow against New Zealand and Tonga, Eric Elwood's charges will have to be at their best to finish as one of Pool A's top two sides.
Click here for details on the squad which Elwood will take to the tournament, as well as their fixture plan.
The Irish Under-20s will have one other warm-up match next Thursday at Ashbourne RFC.
It will be a conditioned match against an Under-23 selection drawn from the Ireland 'A' Churchill Cup squad. Kick-off for that game is 4pm.
For photos of the Ireland Under-20s' friendly victory over the Scottish Under-20 side at Ravenhill, please click here.