Mission: Un-Doo-Able is the first half of the fourth episode of The New Scooby-Doo Mysteries and it originally aired on September 29, 1984. With a story by Charles M. Howell, this episode features the gang in New York City, dealing with the super-criminal named Mastermind.
Mission: Un-Doo-Able – Episode Review
The episode begins with the gang driving in the Mystery Machine down a busy road. Scrappy narrates that they are now called the Un-Doo-Able Mission Team, specializing in the toughest cases.

Scooby is now called Agent-Doo, the top dog in the group. Agent-Doo receives a message on a fire hydrant reporting about Mastermind, an evil genius who is out to control the world’s satellites. It is believed his hideout is near the Statue of Liberty. The fire hydrant then self destructs.

The gang go on a tour of the Statue of Liberty in their street clothes, with Scrappy and Scooby both donning Hawaiian shirts, sunglasses and field hats. Scooby missteps and crashes into a suspicious man who is quite grouchy.
The gang split up with Scooby and Shaggy searching for clues at the base of the Statue of Liberty, here they find a pizza parlour. A woman ahead of them orders a peanut-butter and pepperoni pizza with triple scoop of chocolate fudge ice cream, and she is sent down a secret tunnel as it turns out this is the password. Scooby and Shaggy run up the pizza stand and order the same thing, sending them into the mainframe room below.

On the video screen we then meet Mastermind who mistakes them for technicians. The pair are in charge of setting up a transponder beam, which will allow Mastermind to be in charge of the world.

Up in the observation area, Daphne and Scrappy want to visit the torch, however, the tour guide named Cecil does not allow them access.
In the sublevel, Scooby and Shaggy are being bossed around by a robot. Daphne and Scrappy also find their way down there and begin to look around.
Scooby and Shaggy sing a little ditty to distract the droid about him being a star. Meanwhile, Daphne discovers some secret plans for a missile transponder beam to be built in the torch.

Mastermind catches wind of the situation and sends a fleet of robots after Scooby and Shaggy, which they evade. Daphne then finds a cable which leads them to Mastermind. Shaggy unmasks him, and it turns out to be Cecil the tour guide.

Cecil runs away to the torch, but Scooby and Shaggy are able to make their way up and destroy the transponder beam. Cecil and his spies are then sent away to jail while the angry groundskeeper reveals that he is working for the police. Scooby, Shaggy and the robot then finish with a song and dance.

My Thoughts
I give this one a 5 out of 10. It’s okay, but too silly for me. There’s not much of a mystery here as we don’t spend much time with Mastermind, nor his spies. I’d say 60% of this one is a dance number and spy tropes, while the other 40% is Scooby tropes. It was cool to hear Pat Fraley in this one (as the voice of Mastermind and the droid)
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