It is late and Crabby just wants to sleep, but Plankton keeps Crabby awake with questions and chatter--until a request for a bedtime story takes an unexpected turn.

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.

Environmental mystery solvers Shelby and her best friend, Watts, who is never without his encyclopedia, must help Fred the hermit crab find all the shells that went missing from the beach.