"Casey in Sandland" is the 15th episode of Season 3. Casey meets Sandy, her double - the Princess of the Sand People - and the two decide to trade lives, but all doesn't go well.
Casey is on a beach one afternoon in dry space, talking to herself about how she's bored out of her mind and how she really needs an adventure. She then gets sucked back into the ocean, where she comes across Sandland and sees a giant Sandcastle. She then meets Sandy - the Princess of the Sand People - who also happens to look a lot like her, only she doesn't have a snork on her head. She then gladly gives Casey a tour of the castle, where she talks about how all she does is sit around and wear pretty gowns. Casey wants to stop playing for a while, so they each agree to switch up for a day - Casey gets to be a princess while Sandy gets a chance to play.
All seems to be going well with this plan at the moment. Casey gets to try on gowns, which the maid changes for her. However, Sandy doesn't get a chance to play because the sand people are forced to bring fish for the king. Meanwhile, Morbod the Magician and the Prince team up to take down Sandland. Casey's being fed grapes when they break in and threaten to destroy the entire kingdom. They assume she's Sandy, so she tells them she's not, but before she can get a word in edgewise, they freeze her. Back in Sandland, Sandy's hungry and learns from another sand person that the king has raised taxes, so the sand people are being forced to give him all their fish. Casey gets unfrozen, so she uses the ring Sandy had given her to make her return at once. She does so, and they both stop Morbod and the Prince. Once Sandy has stamped a seal on the Prince's forehead, they are taken away. Sandy and Casey then have to say goodbye to each other. Casey returns to Snorkland and tells her friends about her day, but they don't believe her one bit.
The villains
Background Info[]
This is the only time in which a main character "sees double"
We learn that Casey likes to go on th beach in dry space
