Foster's Home for Imaginary Friends

Bloo and Mac enjoy playing with each other in the mud while raining, but sometimes there can be consequences. As Mac and Bloo get sick, causing Bloo to turn white and Frankie to take Mac home, Bloo misses out on the scary movie the friends planned to watch that night. However, the movie scares the friends enough that they believe that the ghost is real, and they mistake Bloo to be the ghost. Will they be able to figure out it's him before they end up hurting Bloo or themselves in the process?