Lucas & Peyton try to redefine their friendship after Lucas chooses to be with her best friend, Brooke, who is unaware that Lucas & Peyton briefly dated. Dan invites Deb (recurring guest star BARBARA ALYN WOODS) to a getaway weekend, but she suggests he devote the time to Nathan. However, Dan & Nathan's father/son weekend ends abruptly when, after Dan's constant criticism, Nathan publicly reveals his drug use & rebukes his father. Lucas asks Nathan to join his team in a late-night basketball game.