When a famous professional cyclist is brought in after collapsing during a race, House doesn't want to treat him because he thinks he's lying about doing drugs. But when the patient is forthcoming about taking all sorts of performance enhancers and blood-doping drugs, House is definitely intrigued. Cameron is upset the patient is a hero to kids when he is clearly cheating at his sport. She struggles with the ethical dilemma of patient confidentiality and considers going to the media. Meanwhile, House tries to disrupt Stacy and Mark's relationship by attending a group therapy session with Mark.