Ron Atkinson's side had to overcome a team containing Argentina superstar Diego Maradona and faced a mountain to climb, knowing even one away goal for the visitors would swing the tie even further in their favour.
Yet the home fans believed the improbable could happen and, inspired by captain Bryan Robson, a 3-0 win on the night set up a two-legged European Cup Winners' Cup semi-final with Juventus.
UEFA caught up with Frank Stapleton, whose third goal proved decisive after Robbo's double, and Arthur Albiston, who pounded down the left to cross for Norman Whiteside in the build-up to Frank's volley, to reminisce about that fantastic evening.