Gregor Townsend and his Glasgow Warriors took a giant leap towards the Champions Cup quarter-finals with a 15-13 triumph at his former club Montpellier.
The Altrad Stadium battle will go down in Scotstoun folklore as the Guinness Pro12 high-flyers claimed their second win on French soil in Europe's premier competition.
Finn Russell produced a faultless kicking display with five penalties from five attempts to lead his side to glory.
Russell calmed Warriors nerves after two minutes with his first penalty of the evening after Kelian Galletier carelessly crashed into Tim Swinson while the Scotland second-row was airborne.
The 22-year-old fly-half landed the confidence-boosting kick to give the visitors an early 3-0 lead.
Stuart Hogg failed with a long-range penalty just two minutes laster after Kiwi centre Rene Ranger stopped Tommy Seymour in his tracks with a wild flailing arm.
Russell resumed kicking duties and extended his side's lead to six after the hosts went offside to stop a flowing Glasgow move.
The Top 14 high-flyers sprung into action on the 15-minute mark and won a penalty which scrum-half Benoit Paillaugue landed to cut the deficit to three.
Seymour collided with Sitaleki Timani during a sustained spell of Glasgow pressure but they could not muster a score.
The hosts marched back downfield and claimed their second three-pointer after the Warriors went in at the side to close the gap to 9-6 at the break.
The Scots survived a heavy spell of pressure before Mark Bennett set off on a mazy run. Robert Ebersohn was sin-binned for using his boot in the ruck after he was finally brought down.
Russell made it four from four on 60 minutes and struck again moments later to lead his side to glory.
Montpellier claimed a penalty try in the final minute after Glasgow collapsed three five-metre contests, with Teddy Iribaren hitting his conversion through the uprights to secure a losing bonus point for the hosts.