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.

Frustrated by Lucas' growing popularity at school, Nathan searches for Lucas' weak spot, and finds it in Haley. Meanwhile, Peyton is furious with Lucas for submitting her drawings to the local newspaper without her knowledge.

Haley convinces Lucas to go with the team to an after-party at Nathan's beach house in the hopes that the guys will become closer. 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 find a very angry son, she turns to Karen for advice.

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. Also, Peyton has a hard time dealing with the anniversary of her mother's death and finds a comforting ally in Whitey.

When Whitey throws Lucas and Nathan off the bus due to their misconduct on the basketball court, not only does it leave the two brothers stranded 30 miles from home, but they encounter a carload of punks who threaten them with a gun. Injured during the game, Brooke needs Peyton to drive her home and in, an unlikely turn of events, Peyton asks Haley for help. Meanwhile, Karen and Keith attend a business function and tempers flare when Dan and Deb are seated at their table.

On 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 his younger brother once again and Lucas finally makes his move on Peyton. Also, Haley and Nathan grow closer until Brooke spreads a vicious rumor that leaves Haley devastated.

Looking for some fun, Brooke and Peyton crash a college party, but things turn ugly when one of the guys in the dorm, Gabe 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 and the two go on their first date.

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.

After Whitey cancels basketball practice, Brooke convinces Lucas to let loose and takes him out for a wild night out on the town. Meanwhile, Deb instructs Dan to take Nathan away for a father-son weekend to try and rebuild their relationship, but things don't go exactly as she had hoped.

Unable to handle the pressure from Dan, Nathan decides to quit the basketball team and looks to Haley to help him fill his free time. Meanwhile, Brooke becomes increasingly jealous of Lucas and Peyton's growing friendship.

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.

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.