After rescuing a woman, a subway hero collapses. House is unable to determine the man's illness. Meanwhile, Cuddy's mother visits and Taub's wife's libido is aroused.
When a disciplinary camp instructor is stricken with back and bladder pains, the team suspect that one of his charges poisoned him. However, it soon emerges that the student is showing the same symptoms.
A mother's medical history may provide the explanation for a baby's breathing problems. Meanwhile, Foreman and Taub are challenged to hire a female doctor and Cuddy asks House to babysit her daughter.
A patient named Margaret McPherson is suffering from severe and uncontrollable vomiting. Meanwhile, House is cold towards Chase's new hire.
In trying times, Thirteen helps a particularly desperate friend in need. Shocking news awaits House and Taub.