When Luton Town lost the Conference play-off final to York City in 2012, imagine telling a Hatters fan the next time they would play at Wembley would see a place in the Premier League at stake.
Imagine telling Pelly Ruddock Mpanzu, who joined the club in the fifth tier a decade ago, that he would go on to play in the best league in the world with this club.
Imagine telling manager Rob Edwards that, after being sacked by Watford just 11 games into his tenure, he would lead their arch rivals to the Wembley arch just eight months later.
Edwards' team put in a performance that was as close to perfect as you can achieve in football to overturn a first-leg deficit and end the hopes of Sunderland.
The young manager, who led Forest Green to League Two promotion last year, had his first visit of the season to this magical stadium in August on a scouting mission for Watford. Upon arrival, he got lost around the snaking alleys of Kenilworth Road and could not find the right entrance.
It might soon be the likes of Pep Guardiola and Jurgen Klopp losing their bearings around this old stadium. Sunderland certainly did last night. This was not just a win for Luton, it was a demolition. Tony Mowbray's depleted side did not have the answers to a Hatters bombardment.
'I don't wanna sing from the rooftops as nothing is done yet,' said Edwards. 'We try to play to the players' strengths - we are brave, we believe in ourselves completely, we want them to play an aggressive, front-footed and attacking style.
'Maybe it's a little bit of redemption (after being sacked at Watford). I went in with my eyes wide open and knew that could happen at that club. Now I feel at home here. Nathan Jones left this club in a brilliant place, we've tried to just take that on slightly.
'Our fans have been through a lot of dark times so this is great. Our game-plan was perfectly delivered. But now we want to achieve something.'
Luton left the Stadium of Light on Saturday with a deficit though one felt they came into the second leg as favourites. 'The Kenny', as this archaic old ground is affectionately known, was rocking and the Hatters fed off the raucous atmosphere.
Just four of Sunderland's team were over the age of 23, and three of Mowbray's back four are midfielders by trade. Whether purposefully or not, Edwards' team targeted that inexperience and scored twice from corners.
'We knew their strengths and our weaknesses and they came to fruition,' said Mowbray. 'I'm so proud of the lads, I'm proud of the city and the supporters.
'Unfortunately we ran out of the ammunition you need in a football team - we were missing a few ingredients.'
First, Lockyer won a knock-down and Osho fired home the loose ball after 10 minutes, then the captain headed in a goal of his own just before half-time to put Luton ahead in the tie.
In truth, the two-goal loss flatters Sunderland. Apart from a few slaloming runs from Amad Diallo - who got an earful from the home fans for alleged theatrics - the Black Cats created nothing.
They needed luck, several goalline clearances and a bit of poor finishing to ensure the score stayed down. But a Luton win never looked in doubt, with captain Lockyer marshaling a defence that had conceded just 17 times in Edwards’ 25 regular-season matches.
Despite being in non-League just nine years ago, Luton are now one game from the Premier League. It is one of the best stories in English football history.
