Author's note: the characters' names were made up by me, but the characters themselves were by Hanna-Barbera.

Ch. 1

After a successful performance in the famous cruise ship the Silver Siren, the singing Impossibles were taking a well-deserved rest at the VIP lounge where they're safe from their adoring, yet rowdy fans. The red headed bandmate, known to his fans as Manny, was tuning his guitar while admiring the view of the full moon shining its light upon the ocean. The short blond, Carson, was taking a small nap on the big, cushioned couch while his black haired bandmate called Fern by his friends and fans was sitting next to him enjoying another bottle of soda pop. Everything seemed quiet and peaceful until the beeping went off from Carson's guitar. Carson let out a yelp and fell to the ground while the startled Fern spat out his drink.

"Looks like the chief is calling us again," said Carson rubbing the sleep out of his eyes.

"And once again I foolishly thought we're gonna have a restful evening," Fern pouted discarding the empty bottle.

"Better answer that and see what Big D has for us, Carson," Manny replied after putting down his guitar.

"Right, Manny," Carson picked up his guitar and switched on the small screen of the handle as Big D appeared sitting by his desk.

"We received reports that Aquator was spotted in the beach near Empire City. I need you boys to go over there immediately and stop him at once."

"Right, chief," the boys replied in unison. In a quick flash, the rock band Impossibles transformed into the crime fighting Impossibles: Multiman, Fluidman and Coilman. After retrieving their high-tech vehicle from the ship, the Impossibles fly off towards Empire City in their Impossi-jet. "Rally ho!" they let out their battle-cry into the night sky.

Meanwhile, a man in a red scuba diver suit, known as Aquator, was on the beach's shore looking at his watch with a sly grin forming across his face. "Soon the Impossibles will arrive to stop my plans, but I'll be ready for them once I unleash a nasty surprise. They won't know what hit them!" Aquator let out a maniacal laugh, but quickly covered his mouth and hid himself inside a cave when he spotted the Impossi-jet close by.

After landing their Impossi-jet, the young super heroes began their search for Aquator as they walked towards a cave that was near. Suddenly, Aquator leapt out of the shadows and let out a sinister laugh. "So, Impossibles we meet again. Caught you off guard didn't, I?"

"Not really, we kinda saw you running into that cave," said Coilman.

"Oh… You- did?"

"Yeah man, we did. It wasn't even hard to spot you when you were standing on the beach doing that cliché villain laugh of yours," Fluidman replied.

"It's not cliché, it's tradition you insubordinate fool!"

"Pfft. Yeah right," Fluey muttered.

"Enough!" Aquator snapped with such rage that a vein on his forehead can be seen through the red mask. "I didn't come here to be insulted by the likes of you." Aquator then pulled out a vile from his pocket that contained some brownish liquid. "Once I pour my formula into the ocean, it will transform the sea creatures into my very own mutant army and use it to take over Empire city."

"Not if we can help it, Aquator. Rally ho!" Multi replied and duplicated into five replicas as they charged against the villain. Suddenly, a large figure leapt out of the shadows and swatted all the duplicates down in a flash. After the copies fell to the ground and disappeared leaving the original alone as he struggled to get back on his feet.

"Holy Mesopotamia! What the heck is that?" Fluey exclaimed as he and his teammates stared at the repulsive creature standing before them. The monster resembled the creature from the black lagoon, except with large red eyes and had the jaws of a piranha.

"Now I have really caught you off guard. This fellow happens to be my very first creation that I put together by combining human and various fish DNA. I assure you there will be more where he came from," said Aquator as he patted the monster on the back. "Now destroy them!"

The fish monster roared and charged after the Impossibles. As the creature raised its hand to slash Multiman with its sharp claws, he quickly held up his shield to block the attack.

"Rally ho!" Coiley shouted as he sprung up and charged himself towards the monster. The fish monster then punched Coiley in the face and knocked him down.

"Rally ho ho!" Fluey converted himself into liquid, charged towards the monster and pushed him forcefully against the wall. Meanwhile, Aquator was creeping away from the fight as he was going towards the water supply. After converting back to his solid form, Fluey saw Aquator going to the water, he was about to chase after him, but the monster scratched him behind leaving some bloody gashes on his back as he screamed in pain and fell to the ground.

"Fluey!" the other two cried watching their friend fall to the ground screaming and hissing in pain.

"Coiley, you stop Aquator while I go help Fluey," said Multi.

"I'm on it." Coiley stretched out his arm, grabbed the vile and pulled it away with Aquator still holding on to it. Coiley then punched Aquator right in the jaw and he immediately released his vile when he fell to the ground. Multi surrounded his copies and himself around Fluey as they fended off the fish monster.

While the Multimen and the monster were fighting, Aquator got up on his feet and blew a loud whistle. "We've wasted too much time here! Let's go!"

The monster stopped what he was doing and followed Aquator as they jumped into the water and vanished in the dark waters. Multi helped Fluey back up on his feet as they and Coiley looked over the ocean where the villains fled.

"Ah man! I can't believe they got away," said Fluey.

"But at least we foiled his plans and got the formula," said Coiley, opening up the vile and smelling the brown liquid inside. Suddenly, Coiley put the vile to his lips and drank it down.

"Coiley, no!" the other two cried out in unison.

"Relax fellas it's just chocolate milk," Coiley replied after smacking his lips and putting the cork back on the vile.

"Chocolate milk?"

"But, that would mean this was all a set up," said Fluey.

"If that's the case, what was his real plan then?" asked Multi.

Meanwhile, in the bottom of the ocean, Aquator was taking his frustrations on his creation. "You failed me you overgrown sardine! The Impossibles must have figured out that my-"

Aquator was suddenly interrupted by the monster's gurgling growls. "What's that you say? You got one?" Then, a wide, sinister grin appeared on Aquator's face and let out a wicked chuckle. "That's perfect! Everything is still going according to plan!" Aquator then let out a long, evil laugh.

The creature then, made another gurgle.

"Oh, quiet you. It's not cliché," Aquator crossed his arms and pouted.