In Miami, The Celestian Alliance were invited to spend 3 days in The Bermuda Triangle with Professor Atkins. He has recently discovered a rare sea monkey species.
At Pier 45, they run into Mystery Inc. They came because they were also invited by Professor Atkins. Shaggy and Scooby were more excited for the all you can eat buffet, which horrified them.
Inside The Poseidon's Paradise cruise, they met a blonde lady. She was the cruise director, "Sunny St. Cloud" she found them in The Atkins Party and they were set to go. Unfortunately, Brock started to fall madly in love with Sunny. Luckily, Croagunk stopped him in the nick of time.
Lilo told Prof. Atkins about on how they were horrified that Shaggy and Scooby were going to do the all you can eat buffet. Prof. Atkins told them not to worry because there are 4 buffets on the cruise and the only one they can go to is the Canine Chow, where pets can eat too.
They thought it was brilliant. They all got their Pokemon out and Ash explained that Shaggy and Scooby will look after them.
At Canine Chow buffet. They saw that there were numerous pet owners. Once the chefs saw Shaggy and Scooby they gave them one of everything cause they heard about Prof. Atkins warning. They started squirting ketchup on ice cream, added chocolate sauce on pizza, and put salt on bananas. This made everyone in the buffet grossed out.
Later they arrived at the pool where they ran into Sunny, "I just hope you attend tonight's costume party," Sunny explained, "And your costume has to be original, no copycats."
"Roger!" Shaggy said.
In their room, they thought about what are they going as. Then Prof. Atkins thought up a few and gave the list to Sunny. St Cloud.
Mystery Inc- Disco apparel
The Atkins- Zoo animals
The Ketchum league-Hawaiian apparel
The Pelekai Ohana-pirates.
Everyone thought it was perfect. Brock liked the idea of wearing Hawaiian apparel because he'll get to dance with the hula girls, Professor Atkins liked the fact his family are going to be zoo animals because he saved his monkey costume, Mystery Inc liked the idea of them in disco appeal because Daphne brought her disco dress, and The Celestian Alliance were thrilled to be pirates because Ethan just got a new Super Pirate comic, except Warren, felt cautious about it.