Mudsy was a ghost that haunted the Muddlemore mansion. He slept in the grandfather clock and had never been woken up. One day three teens turned the hands on the clock to 12 and when the clock started to bong. Mudsy woke up, along with his cat Boo. The teens solve crimes and defeat bad guys. This show was one of the early examples of Hanna Barbara sourcing overseas animation services (Australia) which later became a standard practice.
When a gang learns that a farmer may lose his farm, they decide to enter the Looney Dooney in the race, and donate the prize money to him. They convert the vehicle into the Monstermobile. But that night, a criminal called the Raven steals it to keep them out of the race. They go to an abandoned saw mill to get it back. After Mudsy rescues them from a near-fatal ride to the grindstone, they recover the Monstermobile, enter the race, and win. They discover that Raven is Otis Carter, the bank president who wanted to foreclose on the farm.
The group stops at Conway Manor when the Looney Dooney is stuck in a bog. They discover that Mike Conway is being threatened by a Marsh Monster.
The gang investigates ghostly occurences at Fort LaFitte.
April Learns that her Uncle Henry, Owner of Chicken Delicious, may be put out of business by the Chicken Man. She and the boys get jobs there to find out who they're up against The Chicken Man turns out to be Mr. Angus, owner of a rival restaurant chain.
In Sleepy Hollow (YES, THAT SLEEPY HOLLOW!), The gang meets Ichabod Crane, who's descended from the original Mr. Crane. He tells them that the Headless Horseman is riding again, and is after him this time. Will history repeat itself?
During the Mexican road race, the kids encounter the ghosts of Montezuma and the Sun God. They also meet two men who both claim to be archaeologist Proffessor Lundgren.
When visiting a western town for it's Wild West Day, the kids are thrown in jail for not wearing cowboy outfits. They are released when Elmo wins a stagecoach race. But their problems all begun. The staged bank robbery becomes a real one, and the crooks drive off with the money, April, Skip and Boo. This conceives the Mayor that the teens are young bank robbers. Can they clear themselves?
While vacationing at the lakeside resort, the group discovers a sea serpent living in the water.
A ghost seems to be scaring guests out in the Widow Wilson's Inn. Strangely, all the frightened guests end up at the Sand And Surf Motel, the only otherr lodging place in the vicinity. Could someone be trying to put Widow Wilson out of business? The Kids and Mudsy decide to find out...
The circus comes to town. The kids see a man disguised as a gorilla rob the box office.
The kids return to their high school for the big ball game (""You two are players, I'm the cheerleader, and Elmo's the mascot""). Two robbers steal a rich lady's necklace, and hide in the football, they disguise themselves as players to get the necklace back. Naturally, they're found out, and arrested.
Following atrail of rhyming clues and wax dummies, the gang goes after the Parrafiend, who has stolen the Betsy Ross flag and the Liberty Bell, and kidnapped April.
The kids are preparing to meet professional racer Winfield Wheelie. April is so taken with this Andretti wanna-be that she volunteers to be his navigator. But behind the scenes, a crook named Road Hog intends to throw a monkey wrench into the racer's plans
In this episode the whole gang is out on a quest to find and capture a Bigfoot-type creature.
In this episode of Funky Phantom the whole gang is at a dog show and Meets a Bulldog formally known as Cromwell. Cromwell is none other then a rich dog who's owner a rich lady, has been targeted for a dognapping by the Houndman. In confusion Houndman's goons take Elmo by mistake.
Yet another classic episode featuring Jonathan Wellington ""Mudsy"" Muddlemore, April Stewart, Skip, Augie, Elmo, and Boo. In this episode the whole gang visits visits the Muddlemore Mansion. Later a portrait of Muddsy's family is discovered.
Muddsy and Boo finally inform the whole gang why they ran away from the Redcoats. They tell them about a few incidents including hiding in a clock that later trapped them and then being kidnapped by men disguised as Redcoats, and forced to dig up the treasure the Brits buried. But now, it's under water.