Grandpa Stink shuffled back home, only to have Jimmy come charging at him like a runaway train, careening straight into the table. "Ouch! This table's got a mischievous streak!" cried Jimmy, rubbing his bruised knee.

"Grandpa, what happened to your back? I keep telling you, no acrobatics while grocery shopping!" scolded Jimmy. Meanwhile, Carpenter, the loyal canine companion, leaped onto Grandpa's back, causing him to yelp in pain.

"Me doing gymnastics at my age? Now that's a hilarious mental image. No, Jimmy, I slipped chasing after Lola, our lost cat. Didn't see the puddle, though. Stupid, I know. Ouch!" Grandpa Stink groaned, nursing his throbbing back.

Soon, Jimmy whisked Grandpa Stink off to Mrs. Horass Morison, the neighborhood's resident grumpy doctor who seemed to have a penchant for injections. Grandpa Stink viewed her as nothing short of a demoness, and his anxiety was palpable as they entered her office.

With sweat dripping down his brow and emanating a distinctly oniony aroma, Grandpa Stink nervously awaited his turn. Mrs. Morison's gruff call for the next patient sent shivers down his spine.

Clenching Jimmy's hand in a death grip, Grandpa Stink endured the dreaded injection, his cries echoing through the clinic. Mrs. Morison's rough treatment left tears in both Grandpa Stink's and Jimmy's eyes as they made a hasty retreat.

Back home, Grandpa Stink sought solace in a hearty lunch of onion-infused delights, while Jimmy rustled up his own meal. Together with Carpenter, they ventured into the garage, where Grandpa Stink unveiled his ancient, rust-covered relic of a car.

"My mighty chariot!" he proclaimed, much to Jimmy's amusement. Skeptical of the term "mighty" for such an antiquated vehicle, Jimmy clung to the footboard to prevent Carpenter from causing further chaos.

"Why clean this old jalopy?" Jimmy inquired, surprised by Grandpa Stink's sudden burst of activity. "We're off to the detective office, Jimmy! I've decided to chase my dreams... and maybe a few mysteries along the way!"