In Paris, France, a brilliant scientist named Henri Ennui has a scheme to use a "Rancinator" to stink up the world's candy supply as part of a ransom of $50,000,000.00. This causes kids to seek out things that look like sweets, but are actually medicine which has some of the kids rushed to the hospital. The Danger Rangers head out to intervene in the mix-ups, confiscate the rancid-smelling candy, and defeat Henri Ennui (who turns out to have a history with Kitty) and his "Frinja" henchmen.