Aside from a love for hoops, it would seem that Lucas and Nathan are two young men with little in common, but they are bound by the dark secret that they share the same father. Nathan is the star of the high school basketball team and local town hero, while Lucas is the only child of a single working mom. Now the two boys' lives collide when a twist of fate puts Lucas on Nathan's team and the half-brothers compete, not only for control of the court, but also for the heart of Nathan's beautiful girlfriend, Peyton.
1.02 The Places You Have Come to Fear the Most
Lucas blows his first varsity game and decides to quit the team. The wedge between Nathan and Peyton continues to grow after Peyton tires of Nathan's jabs at Lucas. Meanwhile, Keith forces Karen to deal with her feelings for Dan after she refuses to step foot in the high school gym to support her son. Lucas learns Peyton's artistic talent, even though she doesn't seem ready to inform the world about it.
1.03 Are You True?
Annoyed by Lucas's growing popularity, Nathan searches for his weak spot and finds it in Haley James, Lucas' best friend. After convincing the team to aggressively haze Lucas, Nathan seeks tutoring help from Haley and tries to befriend the girl. After all, nothing could hurt Lucas more than seeing his best friend help his worst rival. Meanwhile, Brooke develops feelings for Lucas. Karen must face some not-so-friendly acquaintances from the past. And Peyton becomes furious with Lucas when she discovers that he secretly submitted her drawings to a local newspaper.
1.04 Crash Into You
Haley is apprehensive when Lucas decides to go with the team to an after-party at Nathan's beach house. When Lucas sees the wealth that was denied him, he finally confronts his mother about why she let Dan ignore them. Meanwhile, when Nathan's mom returns home to hear her son was involved in a hit-and-run, she turns to Karen for advice. Peyton and Nathan grow more and more apart.
1.05 All That You Can't Leave Behind (AKA: Where I End and You Begin)
Lucas asks Keith to play with him in the annual "Father and Son" basketball game, and realizes he got the better father figure after Dan publicly humiliates Nathan on the court. Meanwhile, Peyton turns down Nathan’s attempts to make it up; she is actually having a hard time dealing with the anniversary of her mother's death and finds a comforting ally in Whitey. Haley continues tutoring Nathan and their developing friendship bothers Lucas.
1.06 Every Night Is Another Story
When Whitey throws Lucas and Nathan off the bus for misconduct, the two boys wind up stranded thirty miles from home. On the long walk home, they encounter a carload of punks who kidnap them at gunpoint. Injured during the game, Brooke needs Peyton to drive her home and Haley reluctantly accepts a ride with them. Meanwhile, Karen and Keith attend a business function, and tempers flare when Dan and Deb are seated at their table.
1.07 Life in a Glass House
The night of Dan and Deb's annual basketball appreciation party stirs up old wounds and new feelings. As Karen makes a new friend, Keith faces off with Dan once again and Lucas finally makes his move on Peyton. Meanwhile, Haley and Nathan grow closer until Brooke spreads a vicious rumor that leaves Haley devastated.
1.08 The Search for Something More
Looking for some fun, Brooke and Peyton crash a college party, but things turn ugly when one of the guys in the dorm drugs Peyton. After Brooke calls Lucas for help, the two bond over caring for a sleeping Peyton, prompting Lucas to look at Brooke in a new light. Meanwhile, Haley gives Nathan another chance (thanks to Brooke) and the two go on their first date.
1.09 With Arms Outstretched
After fighting with his father and Haley, Nathan succumbs to the pressure he is feeling and takes amphetamines to help his game. However, he isn't prepared for the destruction the drugs do to both his body and his family. Meanwhile, Peyton goes to Lucas to rekindle their relationship, but when she arrives at his house, she catches him with Brooke.
1.10 You Gotta Go There to Come Back
Lucas decides if he wants to date Brooke or Peyton. Elsewhere, Whitey cancels practice to help the team refocus. Dan takes Nathan on a weekend outing in an attempt to reconcile with his wife and son; and Deb and Haley plan an open-mic night at the Cafè.
1.11 The Living Years
After quitting the basketball team, Nathan takes advantage of his extra free time to see more of Haley. The couple spend an afternoon at his beach house, where the liquor flows. The Scotts see a therapist to try to fix their family problems, but the distance between Deb and Dan continues to grow. Meanwhile, Brooke grows jealous of Peyton's deep bond with Lucas.
1.12 Crash Course in Polite Conversation
After Peyton receives the devastating news that her father is lost at sea, she and Lucas take an overnight trip to Hilton Head to identify a body that has washed ashore. Overcome with emotion, Peyton kisses Lucas. Meanwhile, an unexpected visit from Dan's parents leaves the Scott family in turmoil, as numerous family secrets are revealed at Dan's birthday dinner.
1.13 Hanging By A Moment
On their way to pick up Karen from the airport, Keith and Lucas' car collides with an oncoming vehicle and an unconscious Lucas is left fighting for his life. Having witnessed the accident, Dan races Lucas to the hospital and must acknowledge that Lucas is his son in order to save his life. Meanwhile, Peyton decides to tell Brooke about the kiss she and Lucas shared.
1.14 I Shall Believe
While holding a vigil at Lucas' bedside as he lays in a coma, Karen meets her son's new girlfriend, and learns that Deb and Dan are getting divorced. Most shocking of all, Karen is horrified to discover that Keith was kind of drunk while driving at the time of the accident. Meanwhile, Nathan tries to win Haley back after she dumps him.
1.15 Suddenly Everything Has Changed
After his near-death experience, Lucas decides he made the wrong choice between Brooke and Peyton so he breaks things off with Brooke and secretly rekindles his romance with Peyton. However, the truth becomes obvious after he is rushed to the emergency room again and the girls come face to face in the hospital. Meanwhile, unable to pay his mortgage after paying for Lucas' hospital bill, Keith puts his garage up for sale.
1.16 The First Cut Is the Deepest
Nathan must decide which parent to live with after the divorce, but Dan decides to force his hand by threatening to reveal Deb's darkest secrets in court unless Nathan chooses him. Meanwhile, Lucas meets a beautiful stranger who starts his head spinning. Grammy Award-winner Sheryl Crow appears as herself and performs the song "The First Cut Is The Deepest" in Karen's Cafe.
1.17 Spirit in the Night
The gang hits the road to Charlotte where Brooke is determined to win first place at the annual cheerleading competition. But when one of her squad member falls ill, Peyton begs Haley to step into the cheerleader's shoes for a day. Meanwhile, after Whitey assigns Lucas and Nathan to the same room, tempers flare and Haley is caught in the middle.
1.18 To Wish Impossible Things
Lucas, Nathan and Jake are auctioned off to the highest bidder in the annual "Boy Toy" charity auction and the night leads to surprising developments with old flames. Meanwhile, having missed out on the auction, Brooke ends up with Mouth and gives him the night of his life. Keith proposes to Karen, after Peyton's father lets her know he would love to date her. Astonishing news for Lucas: Brooke might be pregnant.
1.19 How Can You Be Sure?
Lucas finds out that Brooke is pregnant and must make a decision regarding the pregnancy. Brooke gives Lucas the cold shoulder regarding the situation. Haley considers having sex with Nathan.
1.20 What Is And What Should Never Be
Nathan looks for an after-school job to pay his rent and looks forward to the party that Haley is throwing for him. However, Haley panics when things get out of control. Brooke realizes that she isn't considered a "close friend" so she goes to a bar and meets the infamous Nicki whom she chooses to crash the party with. The news Nicki is the random girl Lucas made out with, leaves Peyton shocked and disappointed in Lucas.
1.21 The Leaving Song
Dan becomes temporary coach of the basketball team when Whitey has to have eye surgery; no else thinks this is really a good idea. Haley finds objectional material on Nathan's laptop and gets offended. Peyton and Brooke are to blame for Nikki kidnapping Jenny and Jake gets upset - and worried. Lucas decides on a complicated decision. Nathan finds that he is pressuring Haley for sex in ways he knows not. And Keith and Karen are at odds on their relationship. Dan finally gives those divorce papers.
1.22 The Games That Play Us
In the first season finale, Lucas and Nathan bear the brunt of Dan's abuse as he coaches them into the playoffs, pushing both of them to their breaking points. Lucas is stunned when Haley's reconciliation with Nathan heightens the intensity of their relationship. Meanwhile, Whitey learns that his medical condition may be more serious than he first expected, and Dan learns a shocking secret concerning Deb and Keith.