The on-loan Reading 18-year-old smashed a 35-yard free kick against the bar with impressive Argyle goalkeeper Jake Cole beaten just before the hour at Home Park.
It was not the first time the Bees hit the woodwork. In the first half, Clovis Kamdjo hit the post with a cracking 18 yard shot in the 16th minute.
Barnet manager Lawrie Sanchez will be wondering how his side did not break the deadlock during a succession of second half corners, when Cole and central defender Darren Purse cleared inswinging Mark Byrne deliveries off the goalline.
At the other end Argyle's on-loan Burnley striker Alex MacDonald came closest to scoring for the home side.
In first half stoppage time he latched on to a poor backpass to push the ball just past the far post with Bees keeper Dean Brill beaten. Then in the 86th minute Barnet central defender Paul Downing cleared MacDonald's angled drive off the line in a crowded goalmouth.