Nyland and Hancock deliver a Christmas present to Ricky Jackson for Kronk. Gunfire erupts while they're in the apartment, forcing the doctors to stay until the gunfire abates. While there, Nyland does his best to save a man impaled on a pipe, while Dennis braves bullets to bring in medical assistance. Diane worries that she might have contracted HIV from Bam-Bam, a laboratory animal. Camille is brought in after suffering a seizure while dancing. Billy treats a high-school baseball phenom with possible colon cancer.