Hendon moved into the last 16 of the FA Trophy for the first time since 1999 with a magnificent performance and result at National League side Oldham Athletic.
Ethan Light had an early goal chalked off while Oldham missed a clear opportunity to go into the break ahead in a first half dominated by both defences.
After the restart, Hendon were indebted to Brad House for making two fine saves before he departed the scene with a suspected muscle tear. Matt Kerbey replaced him, and soon helped produce the first goal of the afternoon, with a free kick that released Kai Brosnan down the Hendon left.
Brosnan entered the penalty area and cut the ball back perfectly for Joe White to finish with aplomb and send the Hendon faithful into delirium.
Ethan Light missed a great opportunity to seal the tie late on, before Oldham were given a lifeline in the 2nd minute of stoppage time. Hamza Semakula brought down Ethan Walker inside the penalty area and James Norwood thumped the spot kick beyond Kerbey.
Any notion of a penalty shoot-out was swiftly put to bed by the visitors. Billy Leonard had a shot deflected wide, before a lung-busting run from the outstanding Blaise Riley-Snow saw him play in White. The Hendon skipper rounded Magnus Norman in the Oldham goal before seeing his effort cleared off the line by a covering defender.
From the corner kick, Dan Matsuzaka's powerful header was parried by Norman into the path of Light. His header goalward found Muir who swivelled and bundled the ball home in the 6th minute of stoppage time.
After a further two minutes the final whistle went to provoke incredible scenes among the 221 Hendon fans in the away end.
The draw will take place at around 3pm on Monday afternoon, and will be broadcast live on TalkSport 2.