House's team resents being made complicit in a web of lies parents have told their son when he's brought in for treatment that may be related to his intersexuality. Meanwhile, no one's content that House is happy.
House is injured in a motorcycle accident. While recovering, he finds an accident victim suffering from a brain injury. House tries to prove the brain damage caused the accident, not vice versa, so he can treat the patient.
When all of House's efforts to rid himself of Amber fail, he turns to someone unexpected for assistance. Meanwhile, the team is left to fend for itself as they try to save a ballerina's life and career.
House and his team treat a patient who had his brain split in half, now it seems like one side of his brain is causing some health/behavioral issues. House plays games with Cuddy over the night he detoxed, and those events will cause major changes. Cameron and Chase come to a decision.
House returns home to Princeton where he continues to focus on his recovery, but surprises Cuddy with the news that he's making a big change in his life. Meanwhile, the team is unable to diagnose a loud-mouthed video game creator who posts each new symptom on the Internet and opts for treatments suggested by the online community rather than by the doctors, and Foreman angles for House's job, but the pressure to solve the case creates tension in his relationship with Thirteen.
When a controversial African politician falls ill, he is brought to Princeton Plainsboro for treatment. The team struggles with whether to help a merciless dictator being subpoenaed for crimes against humanity in his country. Meanwhile, Wilson tries to make peace with a feuding neighbor, but House's prying exacerbates the problem.
A wealthy businessman brings his teenage son, who is suffering from inexplicable stomach pains, to Princeton Plainsboro and insists on having Dr. House handle the case. The father of the patient believes the karmic penalty of his financial success is that he is victim to personal tragedy, and that the answer to his son's medical mystery lies in a reverse of fate rather than medical treatment. Meanwhile, Foreman and Chase prepare to present information on the Dibala case.
The team takes on the case of a reckless police detective who has a family history of sudden heart failure that killed his father, grandfather and great-grandfather all at age 40. Though House is not keen on diagnosing the patient without any detectable symptoms, the team, urged by Cameron, attempts to identify his condition so the detective can live without fear of dying young. Meanwhile, Chase is haunted by his actions in the Dibala case, and House confronts some ghosts of his own.
After House's medical license is reinstated, he reclaims his role as Head of Diagnostics in time to treat Hank Hardwick, an adult film star admitted to Princeton Plainsboro for pulsating eye pain. Meanwhile, Cuddy is reminded that the hospial is not conducive to healthy personal relationships, and House angles to form a dream team.
House and the team take on the case of James Sidas, an exceptionally brilliant physicist and author who traded his successful career for a job as a courier. For the ailing patient, intelligence is a miserable burden that has prompted depression and addiction, and this, coupled with his myriad unusual symptoms, nearly stumps the team. Meanwhile, the doctors at Princeton Plainsboro wrestle with strained personal relationships.
When an old friend and former patient of Wilson's exhibits paralysis in his right arm, Wilson puts himself on the case. House wagers Wilson that the patient's symptoms are attributed to new cancer cells. Wilson accepts even though he is reluctant to believe the cancer has returned. With the help of the team, Wilson works to diagnose the patient more optimistic results, but when things take a turn for the worse, Wilson must address his inability to separate patient from friend. Meanwhile, Cuddy seeks advice in her search for real estate.