SCWB!

Scooby-Doo, Where are You?

We see a bunch of bats fly by the Rigby House, one of the upper level lights being on, and theme music playing in the background. Right as the lyrics start, we see Scooby against a solid black background and he gulps and his eyes go wide.

Scooby-Dooby-Doo, Where are You?
We got some work to do now

We then see Fred, Velma Daphne, Shaggy, Scooby, Ren, Velvet, and Ruby all walking by a bookshelf. Once they walk past it, the shelf slides to the side revealing the ghost hiding in the secret room behind the shelf.

The ghost watches the group carefully as it moans.

Scooby-Dooby-Doo, Where are You?
We need some help from you now

Then, we see Velvet walk away from an archway in a castle of some sot as a green cloaked hand reaches out and tries to grab her

Then, we see Ren sitting in a chair, looking over an old book before the wall behind him opens up, and he falls into the area behind him.

Come on Scooby-Doo, I see you
Pretending you got a sliver

Then we see Shaggy and Scooby in some catacombs as they jump back, Scooby's ears sticking straight up and Shaggy's hair spiking up.  Then we see a the gang in a graveyard as a phantom approaches them.

Then, we see Fred, Velma, Daphne, Shaggy, Scooby, Ren, and Velvet running own a hallway and into a room, and coming out as teens with Scooby now a fully grown Great Dane

Then, we see a skeleton in a spacesuit, seemingly in an airfield as it laughs evilly.

But you're not fooling me, cause I can see
The way you shake and shiver

Then we see Shaggy holding Scooby in a hallway as the two shake in fear. Then we see the two skating down a hallway uncontrollably before crashing into some trashcans in a room they ended up going into.

You know we got a mystery to solve, so Scooby-Doo be ready for your act

Next we see Scooby laughing at something we can't see and then Fred making a deal with Ironwood before getting a van that visually turns into the iconic Mystery Machine.

Then we see Velma gasp at something, followed by a skull on some books with glowing orange eyes.

Don't hold back!

Then Daphne looking to her left and a blue skull with some orange eyes. After that, we see Scooby holding Shaggy in a living room as they shake out of fear and Scooby says, "RUh-oh!!"

And Scooby-Doo, if you come through, you're gonna have yourself a Scooby Snack

Then, we see a glowing ghost deep sea diver.

After that, we see Shaggy, Scooby, and Ruby running along a boardwalk in a barrel.

That's a fact!

The barrel then hits something, something humanoid and falls to the ground.

Scooby-Dooby-Doo, Here are You
You're ready and you're willin'

Then, the three poke their heads out o the barrel with the lid on their heads and they look up at some creepy robot of some sort.

Then, we see Shaggy in a black room as he jumps back and his hair spikes up. Then, we see Scooby in a museum as he holds a finger up to his mouth an goes, "Shh."

Then, we see a ghostly suit of armor.

Then, we see Shaggy and Scooby poke their heads out of some pots somewhere in what looks to be the Schnee Family Manor before they jump out and take off mid-air

If we can count on you, Scooby-Doo
I know you'll  catch that villain

Then, we see Fred, Velma, Daphne, Shaggy, Scooby, Ren, and Velvet all sitting at a table, most of them looking over Velma's shoulder at a book before looking up at the audience with a look of realization

Then, we see Scooby against a solid orange background as he laughs, then winks and ducks out of view. The vie pulled back to reveal The Mystery Machine, now with Atlas tech all along the rooftop and some even inside of it, the van itself being parked outside a place called "R&S Coffee Shop".