Nickelodeon and Paramount+ will premiere the SpongeBob SquarePants Christmas special "Merry Christmas, Mr. Plankton" on Nov. 27 at 5 p.m. ET/PT. The hour-long animated special will air on Nickelodeon and stream on Paramount+ the same day. The special follows SpongeBob, Mr. Krabs and an unlikely group in a festive episode.