What is plankton movie?

I'm sorry, but there is no movie titled "Plankton". It's possible you might be thinking of a character or element from another movie or show.

If you're thinking of Plankton from SpongeBob SquarePants, he's a small, green copepod who is the nemesis of Mr. Krabs and owns the Chum Bucket restaurant. His main goal is to steal the Krabby%20Patty secret formula. He is driven by greed and envy. His plans often involve elaborate schemes and the use of technology.