The gang go on a trip to check on Velma's younger sister, Madelyn. She’s been studying magic at the Whirlen Merlin's Academy of Magic, where apparently there has been some trouble. Sightings of a giant griffin have been scaring all the students away. The gang smells trouble and decide to investigate.
After wrapping up their latest mystery, Velma gets a call from her mother asking that she check on her younger sister Madelyn, who attends a college for magicians. The gang head off to the Whirlen Merlin Magic Academy, located in an old Irish castle. They meet the owner, Whirlen Merlin, along with his brother Marlen, who acts as cook and butler, and Crystal, Whirlen's former stage assistant. Fred is smitten, to Daphne's irritation. The gang learns that a giant gryphon has been scaring away the students and staff.
After dinner, Velma, Daphne, and Fred are talking in the hall, when Daphne comments on his attraction to Crystal. Fred explains that she is so graceful, then he and Velma make fun of Daphne's kultziness.
Later that evening, Madelyn, who has had a crush on Shaggy for years, takes him on a romantic walk to in the gardens and show him an ancient sun-dia. Madelyn explains that the gryphon was meant to protect the school, but then the gryphon chases them from the garden. A student takes a picture of the gryphon, which appears on the morning newspaper. The rest of the students leave, so the gang starts taking classes themselves. Meanwhile, Calvin Curdles, a powerful vegetable ice-cream guru, continually offers to buy Whirlen's castle from him. The gang promises to investigate to see if Curdles is behind the Gryphon, so he tells Amos to call if he hears anything new.
Velma finds Daphne practicing ballet so she can be more graceful and capture Fred's attention. The two then stumble on a secret passageway leading to the attic of the school, where they discover (through an old scrapbook) that Alma Rumblebuns, the school's head maid, used to date Calvin Curdles. Meanwhile, Jack and Midna discover the special effects room of the castle, where they are discovered by Ms. Rumblebuns and knock over some chemicals, creating a fog. The room is revealed as Marlen's private laboratory, where he creates holograms and puppets for Whirlen's show. Madelyn then finds a book about the ancient staff of O'Flannery, which is said to control the gryphon. The gang finds the staff in O'Flannery's grave, but are chased away by a Banshee and narrowly escape.
Afterwards, Shaggy and Madelyn sit down and talk, and Shaggy discovers that he likes Madelyn just as much. Not long after,the gryphon chases them again. As the gang runs to the castle, Shaggy and Madelyn bump into Amos and misplace the staff. When Madelyn runs outside to recover the staff, she is kidnapped by the gryphon and taken to its Roost, an ancient dilapidated tower. Meanwhile the gang finds out that Amos has been secretly working for Calvin Curdles to try to get Whirlen to sell the castle. Amos calls Curdles to the castle while the gang goes after Madelyn, Calvin Curdles tries to convince Whirlen to sign over the castle. Whirlen almost does but the gang suggests that they wait before the deal is signed, still believing that Curdles is behind the entire thing. They get into the tower with the spear, which is a key, and they rescue Madelyn. Everybody rushes outside including Curdles. The gryphon crashes to the ground, where they discover that it is a giant puppet, controlled from a blimp hidden by a fog machine run by Whirlen's brother Marlin. He had discovered that Lord O'Flannery had devises hidden in the Gryphon's Roost, hoping it would make everyone think a monster lived there. Marlin used the devices to scare trespassers away. He was also behind the banshee, which was only a hologram.
Tired of doing the work but getting none of the credit, Marlen decided to use his puppets and illusions to become a famous magician himself, but he needed money and the only way to get some was to get Whirlen to sell the castle.
So Marlin had his gryphon puppet scare everyone away. He apologizes for trying to make Whirlen fail, knowing how much the school meant to him. Not wanting to take away his dream. Whirlen forgives Marlin, and all is well. Velma reveals that Amos found Marlon rebuilding the Gryphon and told Curdles about it. Curdles reveals he wanted to buy the castle to win back Alma's heart after having left her years before in order to make something of himself. He instead got distracted by the money from his vegetable and meat ice cream cones. Alma accepts him back and they become a couple again. They also find the staff hidden in the deflated blimp. It pierced the blimp when Shaggy threw the staff at the gryphon and missed it.
The Merlin brothers decide to make Madelyn their apprentice and soon after Calvin Curdles sponsors the reopening of the Merlin Brothers' Academy of Magic, where Madelyn performs with Daphne acting as her assistant. In one of the tricks she appears in the seat next to Fred and gently teases him, causing Fred to see her in an all new light. Scooby 'tames' a lion; which is actually the real Scooby controlling a puppet Scooby, which tames the lion.
While alone, the Mystery Machine "talks to some kids": "You kids are still watching? Well, the mystery's over! Now move on with your lives! Hahahahahahahahaha...(cough) I need oil."
- Madelyn Dinkley (single appearance)
- Whirlen Merlin (single appearance)
- Crystal (single appearance)
- Amos (single appearance)
- Alma Rumblebuns (single appearance)
- Calvin Curdles (single appearance)
- Gryphon (single appearance)(no lines)(disguise)/
- Marlon Merlin (single appearance)(redeemed)
- Banshee (single appearance)(projection)
- Chemical Creep (single appearance)(no lines)(disguise)/
- Ms. Thelmer (single appearance)
- Treena (single appearance)
- Sherman (single appearance)
- Sheriff (single appearance)
- Mrs. Dinkley (mentioned)
- Shamus O'Flannery (single appearance)(no lines)(flashback only)
- Students (single appearance)(no lines)
- Mom (single appearance)
- Karloff Chemical Company
- O'Flannery Manor
- Shadow Lake
|Calvin Curdles||He wanted to buy O'Flannery Manor.|
|Amos||He was a spy for Calvin Curdles. He was the only one who went outside at night.|
|Alma Rumblebuns||She said the Gryphon came back to restore the castle to the way it should be.|
|Crystal||She trained animals such as the Gryphon.|
|Marlon Merlin||He was jealous of never getting credit.|
|Ms. Thelmer as the Chemical Creep||Trying to steal secret formulas from the Karloff Chemical.|
|Marlon Merlin operating the Gryphon||Wanted to start his own magic act.|
- Main article(s): Scooby-Doo! Abracadabra-Doo: Music from the Original Movie
|"Scooby-Doo: Abracadabra-Doo!|| Music and lyrics by Joey Levine|
Produced by John Squicciarino
|Just For Laughs|
- The animation style has been changed, blending both their original Iwao Takamoto designs (including flesh coloured sclera) and the early direct-to-video films, with darker three-dimensional shading. Although on the cover art, they are drawn in their WNSD-style.
- Casey Kasem retired in 2009, with Matthew Lillard succeeding him as the voice Shaggy, who had previously played the live-action counterpart in Scooby-Doo: The Movie and Scooby-Doo 2: Monsters Unleashed.
- This is the first direct-to-video film since Alien Invaders to have a soundtrack (albeit digitally).
- The Mystery Machine's license plate number is "145 343". This isn't the first time at this attempt, as it was "SCOOBY" in the Scooby-Doo and Scrappy-Doo (second series) episode, Scooby and the Bandit.
- The Mystery Machine breaks the fourth wall at the end credits (via its self-aware G.P.S.), by telling the viewers to get lost and that it needs oil.
- When the gang is confronted on the bridge, Shaggy shouts, "You shall not pass!" and stomps the staff down, a reference to Gandalf in Lord of the Rings.
- The people referred to when Shaggy said, "I totally command you by the powers of Houdini, The Wizard of Oz, and, um, the English kid with the glasses, to put us down", before he threw the staff, is Harry Houdini, the Wizard of Oz, and Harry Potter.
Inconsistencies/continuity errors and/or goofs/oddities
- Ethan Spaulding, Ted Blackman, and Eric Semones are listed in the opening and closing credits for the roles they play in making the film.
- In spite of his statement that he "never wanted to hurt anyone", Marlon put Shaggy, Scooby-Doo, and Madelyn in extreme danger by dangling them from a rope of tied-together sheets high in the air. Any of them could have dropped from the rope and fallen to their death. He didn't seem to make any effort to set them down until he was forced to do so thanks to his balloon being damaged.
- The opening song is named after the film yet uses different punctuation, appearing as "Scooby-Doo: Abracadabra-Doo!", instead.
- During the scene when they were driving to the school, and Daphne and Velma were reading about Shamus. When Daphne said he was practicing dark magic and Shaggy said creepy, there was an audio error when Velma said "It gets creepier" it came out as "It gets reepier".
In other languages
|Spanish (Latin America)||¡Abracadabra, Scooby-Doo!||Abracadabra, Scooby-Doo!|
|French||Scooby-Doo: Abracadabra||Scooby-Doo: Abracadabra|
|Italian||Scooby Doo Abracadabra Doo||Scooby-Doo! Abracadabra-Doo|
|Portuguese (Brazil)||Scooby Doo! Abracadabra-Doo|
|Polish||Scooby Doo: Abrakadabra-Doo|
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