Harry Keddie’s last-gasp try meant Newport Gwent Dragons avenged last year’s heartbreak and became the first Welsh name on the Singha Premiership Rugby 7s trophy.
In 2014 the Dragons finished runners-up as Gloucester Rugby clinched their second-successive title.
However, this time around a determined Dragons side overcame a star-studded Wasps, refusing to be denied as Keddie dotted down with time up.
The Dragons booked their spot at Twickenham Stoop after safely navigating their way through Group A at Cardiff Arms Park.
Victory there meant the Dragons faced a quarter-final matchup with Sale Sharks in the evening's first encounter.
And the Dragons showed from the off that they were going to be a force to be reckoned with as Man of the Round Elliot Frewen dotted down early.
Frewen then saw yellow and the impressive James Mitchell got Sharks back into contention only for Luke Crocker to restore the lead on the stroke of half time.
And that opened the floodgates as James Benjamin ran in a converted try and Angus O'Brien made sure that there was steady progress to the semi-finals.
That meant the Dragons would have the chance to gain revenge for last year's disappointment as they came up against a Gloucester side looking for their third title in a row.
The Dragons once again started fast and Benjamin bagged another score down the left within a minute of kick off.
Ashton Hewitt then extended the lead with a converted try before Gloucester woke from their slumber and Mat Protheroe got them on the board.
Ben Vallacott then crashed over for the Cherry & Whites and the conversion gave Gloucester the lead.
However Keddie was on hand to save the Dragons for the first time in the night, and his try on the left meant the Welsh outfit would once again have the chance to go for glory.
That was going to be no easy feat however as an imperious Wasps lay in wait.
But the Dragons hadn't read the script and Frewen showed his class with an early score that was converted by skipper Geraint Rhys Jones.
Wade turned on the class though and showed blistering pace to dart down the right and score only for Wasps to be pegged back by a Benjamin score.
Wade was once again on hand to provide the finishing touches as Wasps went ahead with time running down – Dan Robson with some brilliant work before offloading to the England man.
But Keddie once again popped up when it really mattered and a dive for the line in the final play of the game meant the trophy was heading to Wales.
Cup Quarter-Final: Newport Gwent Dragons 26 Sale Sharks 10
Cup Quarter-Final: Gloucester Rugby 31 Harlequins 26
Cup Quarter-Final: Wasps 33 Exeter Chiefs 5
Cup Quarter-Final: Newcastle Falcons 26 Scarlets 31
Plate Semi-Final: Sale Sharks 45 Harlequins 24
Cup Semi-Final: Newport Gwent Dragons 19 Gloucester Rugby 14
Plate Semi-Final: Exeter Chiefs 14 Newcastle Falcons 12
Cup Semi-Final: Scarlets 12 Wasps 33
Plate Final: Sale Sharks 19 Chiefs 26
Cup Final: Newport Gwent Dragons 17 Wasps 12