When a Christmastime baby is found abandoned in the hospital parking lot, Dr. Joyner quickly grows attached; Dalgety tries to save a homeless man who was stabbed in the hospital waiting room; authorities bring dozens of homeless people to Mission General to ""clean up the parks;"" and Kellerman assists in surgery with a seductive female physician who was once his lover.

A man who refuses surgery because he thinks he is a space alien sorely tries Dalgety's patience. Meanwhile, Donge plots to become the new chief hospital administrator -- but collapes from a weak heart -- a wife seems strangely indifferent to her husband's life-threatening surgery, and Kellerman is angry when he finds out his ex-wife is pregnant.