Crabby is a very grumpy crab, so Plankton tries to find a game that will cheer Crabby up, but Crabby does not want to play Simon says or hide-and-seek--will a game of tag be more to Crabby's taste?

When Crabby gets sick, Plankton is determined to play doctor and take care of his friend, even if Crabby does not want the help--until Crabby realizes that he can get Plankton to do all of his household chores.

Crabby is expecting just another boring day in the ocean, but Plankton decides to throw a best friends party--and even Crabby's long list of things he wants at the party will not deter him.