Nathan gets some news about his future on the Chiefs. Peyton gives birth to hers and Lucas' baby daughter, Sawyer, and receive a surprise visit from Karen. Dan is on death's door, while Brooke and Victoria prepare to re-launch Clothes Over Bros.

Chase bravely bares Chuck's absurd, imitative adoration for 'cool', actually neglectful Chris Keller and stands by the ingrate knave when his father Wade Scolnic finally visits, but discards Chase as if a random babysitter. Nathan is missing since his flight home from Europe days ago. After cocky Keller helps activating Tree Hill PD officer Stevens, Haley finds Dan's cash stash and suspects a horrible crime. Julian can't forgive himself even now his loved-ones do, blames himself for bullying by strangers and picks a bar-brawl to get a 'bloody good' beating. Pushed by Dan and Quinn, Clay checks in for residential therapy with Dr. Alvarez, keeps dismissing 'mere talk' as therapy, but decides against signing out after meeting shy Logan, a neglected orphan boy who hangs around the rehab clinic.

Haley seeks help from Lucas as Nathan makes an escape attempt. Brooke comes face-to-face with Xavier. Julian uncovers evidence that assists Dan in his search for Nathan. Clay makes a connection with another patient.

Haley receives news of a possible tragedy. Dan's search for Nathan leads him back to his dark past. Clay has a breakthrough in his treatment. Brooke and Julian deal with Xavier. Chase's concern for Chuck pushes him to his limits.

Dan, Julian and Chris Keller attempt to rescue Nathan. Brooke's conflict with Xavier escalates. Quinn and Clay revisit the past.