Following his heart attack, Lucas (Chad Michael Murray) returns to school, hoping to rekindle his romance with Peyton (Hilarie Burton).

Haley (Bethany Joy Galeotti) learns that Nathan (James Lafferty) was responsible for her accident.

Brooke (Sophia Bush) and Rachel (Danneel Harris) hatch a plan to steal the next calculus exam, while Dan (Paul Johansson) faces murder charges and Deb (Barbara Alyn Woods) breaks out of rehab.