The Mystery of the Black Sponge

The Mystery of the Black Sponge is the 8th episode of Leader Plankton! and the fourth episode of the 2012 Leader Plankton! Summer Marathon

Plot
Unsure of who Black Sponge really is, Leader Plankton sends out on a top secret spy mission to figure out. Will Leader Plankton find out who Black Sponge really is? Will he get caught? Find out in The Mystery of the Black Sponge!