Sea Kids In Among Us! (Part 1) Sea Kids But There Is An Imposter Among Us!

Plot
Carter, Christian, Freddy, David, January, June, Susie, Mandy, Melissa, and Slim are on a Spaceship and must do Tasks to maintain it. However, there are two Alien, Parasitic, Shapeshifting Impostors on the Spaceship with them that plan to turn the rest of them to stone.

Transcript
Carter, Christian, Freddy, David, January, June, Susie, Mandy, Melissa, and Slim are gathered around a table with a button on it in the Cafeteria of a Spaceship.

Impostors (Spoilers)

 * David
 * Melissa