On the very special 100th episode of "One Tree Hill," it's Lucas (Chad Michael Murray) and Lindsey's (guest star Michaela McManus, "The Beautiful Lie") wedding day and Peyton (Hilarie Burton) must choose whether to intervene or lose her true love forever.
Nathan (James Lafferty) uses the occasion to attempt a reconciliation with Haley (Bethany Joy Galeotti), and the recently paroled Dan (guest star Paul Johansson) shows up for the family reunion.