"Crabby is not a happy crab, in fact Crabby is quite crabby, so pushy Plankton, who is always trying to cheer up fellow marine creatures, bakes Crabby a cake--but will Crabby finally smile?"--
"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?" --
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.
Late at night, squids creep from the ocean to the reader's house, where they leave inky doodles on the bathtub, walls, books, and more, then escape in time to avoid the blame.
The book's narrator attempts to tell a tale about a unicorn, a dinosaur, and a shark, but the three characters are less than impressed and uncooperative.