After a goalless draw in the first leg at Old Trafford, Manchester United produced a stunning comeback in the second leg, winning 3-1 to progress to the quarter-finals. Further victories against Juventus, and a tense semi-final against German giants Bayern Munich, set up a final between Manchester United and Serie A champions, Lazio.

The Champions League final was a tense and tight affair, with both teams creating several chances, but unable to convert them into goals. With just seconds left, substitute Teddy Sheringham equalised for Manchester United, before Ole Gunnar Solskjaer scored the winner deep into injury time to secure a 2-1 win and the Champions League trophy.

The treble-winning season was a testament to the resilience and determination of the Manchester United squad. Despite facing tough challenges in all three competitions, they were able to overcome adversity and come out on top, securing their place in the annals of football history.

The impact of the treble-winning season was huge, both for Manchester United and English football as a whole. It confirmed the club's status as one of the dominant forces in European football, and provided a blueprint for other English clubs to follow in their quest for success in Europe. 

For Sir Alex Ferguson, the treble-winning season was the crowning moment of a glittering managerial career, and cemented his legacy as one of the greatest managers of all time.

In conclusion, the 1998-1999 season will always be remembered as a defining moment in Manchester United’s history, and a testament to the resilience, determination and quality of a truly remarkable team. The treble-winning season remains one of the greatest achievements in the history of English football, and a feat that will be remembered for generations to come.