What is the name of the episode where Spongebob works for Plankton?!

Question: What is the name of the episode where Spongebob works for Plankton!?

Mr!. Krabs loses Spongebob in a bet with Plankton!. And then Mr Krans and Spongebob (later on in the episode) sing a sad song!.Www@Enter-QA@Com

Answers:

Welcome to the ChumbucketWww@Enter-QA@Com

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