This Is for the people that are asking where are the other episodes. The answer is: if they're not there they haven't aired yet. Nickelodeon airs spongebob very weirdly where there will be episodes all week and then nothing for 3 months or more. And for the people who are going to say it aired on tv the answer to that is most likely the sister episode has not aired its sister episode. When Nickelodeon is airing a new episode for Spongebob they dont air it like you see on amazon video. Each episode is individually aired so amazon cant put it on they're site because both episodes have not aired. And when they have both aired it will be available.
I hope this helped anybody