The 2005-06 campaign was a season of unprecedented domestic dominance for Olympique Lyonnais as Les Gones clinched their fifth consecutive Ligue 1 title, extending their record-breaking streak with a commanding 15-point margin over second-place Bordeaux. Under new head coach Gérard Houllier, the team was an unstoppable force, boasting the league's best attack and defense. Brazilian forward Fred spearheaded the charge with a crucial 14 league goals, while midfielder Mahamadou Diarra proved instrumental and was named the club's Player of the Season. The squad, featuring stars like Juninho Pernambucano, Sylvain Wiltord, and Florent Malouda, was built to compete in Europe, but the campaign ended with a heartbreaking Champions League Quarter-final exit to AC Milan, which remains a defining, painful chapter despite their historic domestic success.