Setting:
Mystery Machine stops in Kirtland. Fred and Daphne talk to some fronteersy-looking men who are all wet. The men talk about how they have just been baptized and seen an angel walking on water. One of the men takes a fish out of his sleeve and leaves it (because the animation is easier than having him shake it out a pant leg)
Fred: Angels that walk on water?
Daphne: I would love to see that.
Velma: (inspecting the fish and handing it to Shaggy) There is something very fishy going on here.
Shaggy: (Taking the fish) Do they have food at the baptisms? ::canned laughter::
Exposition
Daphne and Fred split up, Velma, Scooby and Shaggy head into town to ask some questions.
Daphne meet Sylvia who says an angel will visit her that very night. Fred and Daphne decide to wait around the woman’s house.
Meanwhile Velma, Scooby and Shaggy head into town to learn about the leader of the group. This leads them to a store (author’s note: this would have been Nauvoo where the endowment was above the store, not Kirtland, but it was too good to pass up drawing Scooby and Shaggy via food), where Scooby and Shaggy follow their noses to a bakery. Velma is bumped by some members coming out of the store and loses her glasses. A man in a turban and dressed all in white with a large sword comes out behind Velma
:: commercial break::
The man in the turban puts the sword away, and gives Velma her glasses. He introduces himself as “John” and excuses himself.
Meanwhile Scooby and Shaggy follow their noses into a kitchen where they are told the food is for people who are wearing all in white after their “initiations”. Scooby and Shaggy use bedsheets in the store to make robes and slip in to the top floor of the store where they join an endowment. The individuals begin to promise to give everything they have to the church
Scooby: “Ry rwon’t rant ro”
Shaggy: “Zoinks Scoob, I don’t want to give everything to this organization either!”
The officiator realizes Scooby and Shaggy don’t belong (but not that Scooby is a dog) and sends the individuals in the endowment after the interlopers. Scooby and Shaggy run out.
Officiator: “After those interlopers! They’ve seen too much and must be silenced!”
Cut to Fred and Daphne:
Fred and Daphne see a man dressed as an angel climbing out of the window of Sylvia’s house. They follow him where he heads down to the river.
Cut to Scooby and Shaggy running in forest brush
Scooby and shaggy are running with their make-shift endowment clothes blowing behind them as they run. “Quick, Scoob, hide!” says Shaggy, and they jump into the bushes. They land on a man who has glowing paint on him. The man is very large and squirming on planks of wood just under the surface of the water.
The man in the angel garb shows up, with Fred and Daphne close behind. Fred says “Scooby, Shaggy, what have you found?”
Scooby: “Ry ron’t Rnow”
Velma arrives: “there sure are a lot of angels around her”
Shaggy: “Like, why do angels need planks of wood to walk on water?”
Daphne: “Because this angel is none other than:”
Fred: “Joseph Smith”, pulling off the turban on the water-walking angel
Velma: “My angel is John Taylor, a close associate of Smith who dressed up as the angel guarding the tree of life”
Daphne: “Our angel is another of Smith’s followers who told that Sylvia lady she must Marry smith, but climbed out a window.”
Shaggy: “Zoinks, I mean why would an angel need to climb out a window”
Fred: And he used the angel trick to convince newly baptized people they were in the right church so they would do anything else he said, even marry him polygamously.
Joseph Smith: “And I would have gotten away with it, if it weren’t for you kids and your nosy dog too.”
Author’s note: There really is a claim of boys capturing Joseph Smith during fake walking on water: http://www.sidneyrigdon.com/dbroadhu/NY/Otsego5.htm
That was the basis of this story fitting into the “Scooby-doo teenage” dynamic. The number of angels and order where they appear was condensed to fit the Scooby-doo television format, but each case is from a cited source of a very human-acting angel. It has four independent sources and has not been addressed by the church or FAIR that I can find.