Last year's time-capsule is maliciously opened 49 years early, revealing many kids' embarrassing secrets, lies and even worse truths, shown on TV screens at school and even on the Internet. Peyton prepares a benefit for the National Breast-cancer action, in memory of her recently deceased ma Ellie Harp; it rocks and brings most kids back together. Keith announces his engagement to Karen and his plan to adopt Lucas. Jimmy Edwards, who bagged the worst on everyone in his time-capsule speech, gets roughed up, but the Scott brothers, Mouth and Rachel save his bacon. Dan reminds Keith how close they were as boys and hands him the black ledger but is scorned and burns it. Nathan and Haley enjoy closeness again. Lucas embraces Keith as his future father, without step-.

The aftermath of the school shooting and the death of Jimmy Edwards forces everyone in Tree Hill to examine their lives. Nathan reassesses his relationship with Haley, while Brooke and Rachel join forces to heal the student body. Dan must deal with the ramifications of shooting Keith, while Lucas and Peyton consider the implications of their kiss in the library.

Nathan and Haley's wedding is a time of great joy. And great sadness. Peyton and Brooke fall out, Dan learns the truth about the fire, and Rachel gets publicly drunk....and publicly bitter.

The aftermath of the post-wedding car accident unfolds. Haley is deeply affected by Nathan's attempt to rescue Cooper and Rachel, Brooke confronts Lucas with her true feelings and Peyton makes a startling discovery. Pressured by the fact that someone might know he killed his brother, Dan assaults Deb.

Lucas and Brooke, now broken up, clash at a post-game party and Haley realizes that Rachel is plotting to seduce Nathan. Meanwhile, Peyton connects with her half-brother, Rachel reveals that she knows who is pregnant and Skills takes the court with the Ravens basketball team.