 Kim and Ron are Sunshine Spreaders at Dr. Possible s hospital. But fed up with emptying bedpans, Ron volunteers to try to cheer up a shut-in elderly gentleman. The man - Mr. North - is very gruff, but Ron is determined to cheer him up. While alone in the Mr. North s library, Rufus finds a secret switch. Activating it, Ron and Rufus are swept to a pair of fire poles that lead to a vast cave under North s house filled with superhero crime-fighting equipment. Reading some newspapers on display, Ron deduces that it s the lair of the Fearless Ferret - a Batman-like crime-fighter - and that North was the Ferret. He and Rufus don the tights of the Fearless Ferret and his sidekick Wonderweasel, just as North comes down and confronts them. Ron pleads with North to let him become the new Fearless Ferret, and North agrees. Ron and Rufus go out on patrol, foiling crime much as he does with Kim - by accident. Kim wonders where Ron goes at nights, so she has Wade trace him to a warehouse. There, both of them confront White Stripe, a villain who shoots a powerful stink spray at his foes. White Stripe escapes, and Ron returns to the Ferret Hole with Kim following. North offers Kim the uniform of Ferret Girl, but she declines. Later, both Kim and Fearless Ferret-2 (Ron) take their own paths investigating a crime spree of stolen items that are particularly stinky: used socks, garlic, cloth diapers. Then, Ron and Rufus find an elderly woman in distress, who turns out to be White Stripe. White Stripe knocks them out with his stink spray. At the same time, Kim discovers that the Fearless Ferret is actually an old TV character and than Mr. North was the actor who played him. Kim confronts North, who is a bit confused about reality and fantasy. They then discover that Ron has been kidnapped. They follow his signal to the Tri-City Convention Center, where there is a Ferret Fest going on. White Stripe (another actor from the TV show that is similarly confused about reality and fantasy) reveals his plan to Ron, who is tied up in the rafters of the convention center. He plans to pop the White Stripe balloon, which will cover everyone in the center with a powerful stink that will last for years. Kim and North arrive at the center. Kim goes to rescue Ron, while North wanders around the Ferret Fest. But White Stripe gets the drop on Kim. White Stripe leaves, and Ron goes into action. He takes Kim back down to the floor, ropes the White Stripe balloon, and pulls it out of the center just before it is popped. Inside, fans recognize Mr. North, and he welcomes their attention and smiles. So Ron is the hero twice: he saves the confectioners, and he finally spreads some sunshine on Mr. North. (The popped White Stripe balloon flies by the cable TV office, where it stinks up a couple of smarmy executives.)