Haley makes up her mind: she can't leave Tree Hill because of Nathan. Anyway, as soon as she comes back home there is a surprise waiting for her: Taylor, her older sister, has just shown up for a visit. What Haley doesn't know is that Taylor was the first girl Nathan ever slept with. Of course, Nate and Taylor end up making a deal: Taylor won't tell Haley the truth if Nathan convinces Haley to put her up for a while, since Taylor needs a place to stay after getting kicked out of college. However, Haley has her own secrets too. She kissed Chris at the station, for instance.

Meanwhile, the whole "Brooke and Felix no more Friends with Benefits" can get started, even though Lucas isn't too thrilled about it. In fact, he's downright jealous.

Meanwhile, Anna tells Peyton (and Lucas too) that she is bisexual. Peyton assures her she doesn't have to be afraid to be what she really is. Lucas assures her they can still be friends.

Karen forgives Deb for lying to her about Keith. At the same time, Lucas finds out Jules was hired by Dan to make Keith fall in love with her. Anyway, Jules assures him she ended up actually falling for him. Lucas doesn't know if he can believe her and debates whether to tell his Uncle Keith of the deception.

Jake came back to Tree Hill because Lucas told him Peyton might be in trouble. Although Peyton is very relieved to see him back, unfortunately, he can't stay much longer since Nicki could find him.

Karen thinks Andy is having an affair, but it turns out the woman who answered the phone when Karen called him up was the woman who got hit by Andy's car two years ago. Andy tells Karen he goes and checks on this woman every year, because he feels it's totally his fault.

Lucas drops by Keith's, claiming he has to talk to him. But as soon as he sees Jules is also there, he decides not to say anything at all.