When Commander Octodon builds his vast underwater hideout that causes the oceans to rise, he sends his henchmen Lobster Theodore and Joey Clams to sabotage the pools that the Danger Rangers plan to build all over the world but when Fallbot comes with them, they blame him for it.

During Boston's power surge problem, Nobel Prize-winning inventor Quentin V. Manderbill plots to build a transporter powered by the wasted energy that children use playing on the prize-rigged playground equipment made by his Play Along Playground Equipment company. When the Danger Rangers end up captured, Gabriela contacts their Junior Danger Ranger allies in Boston for help.

The Danger Rangers celebrate National Fire Safety Month across the United States. In Chicago, two boys named Derek and Scott cause a false alarm that Fire Chief Daniels and his fire department respond to. When Derek and Scott play with fireworks and accidentally start a major fire near their building, Sully and Kitty must help the Chicago Fire Department put out the fire, rescue the building's inhabitants, and teach Derek and Scott about fire safety.

At the time when the Danger Rangers are preparing for their appearance at the Monster Truck Relay, Worley the Weasel and his friends hold a secret jogging race for the prize of the mini-monster truck. The Danger Rangers arrive to teach pedestrian safety and thwart Worley's plot.