I like the concept of this special and enjoyed every moment of it. The idea of Plankton trying to destroy Bikini Bottom with a goo bubble was brilliant and I laughed at certain parts, like the townspeople literally kissing their city goodbye. I also found it cool when SpongeBob, Patrick, and Sandy teamed up to defeat Plankton.
Now the ending was like the ending of "Fungus Among Us," but I am not removing any points for that. In fact, I am going to give this special a perfect score. If you have not seen this special, I recommend that you see it.