AT first glance, this scoreline looks to be a comprehensive win for the Welsh Category Two Academy side but that was not the full story.
The Pilgrim youngsters were twice caught out by the long ball as they were putting their hosts under pressure and their second goal was certainly the best of the game.
Cardiff got an early goal but back came Argyle with Oscar Halls hitting the crossbar and Will Jenkins-Davies reacted fastest to slam home the loose ball.
The Bluebird approach was causing the visitor's defence problems and they restored their lead prior to the interval. Argyle started the second period on the front foot but were once again caught on the counter-attack as the Bluebirds added a third goal.
A superb strike from Jenkins-Davies, his second of the game, pulled his side within a goal of their hosts but with Argyle throwing everything forward, they were once again caught out by a long ball for Cardiff to complete the scoring late in the game.
"I was pleased with our performance as, despite the score, we were always in the game," said Academy Manager Phil Stokes.
“This game will give us a lot of confidence going into the remaining fixtures as the lads will believe in themselves and their ability to compete against Category 1 and 2 opponents.”