A drunk driver rams a parked car, trapping a child inside. Chet pesters John about his Native American heritage. A kid gets his finger stuck in a gumball machine. A woman's new girdle causes breathing difficulties. A worker's error leads to fuel being mixed with the water supply, causing explosive results. A sniper makes a scaffold rescue dangerous.

A man is injured when his chimney explodes. A brash young intern at Rampart thinks he knows more than the paramedics and makes a near-fatal diagnosis of a heart patient; Dr. Brackett send him on a ride-along with Squad 51. A girl gets her hand stuck in a mailbox. Johnny and Roy must rescue a heart attack victim trapped on an oil refinery tower — in the midst of an explosive structure fire.