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.

JONATHAN FENSKE is the author and illustrator of the leveled readers Woodward and McTwee, Love Is in the Air, Guppy Up!, A Pig, a Fox, and a Box, which was a 2016 Geisel Honor book, and the Acorn Crabby series. He is also the author of several picture books, including Barnacle Is Bored and its follow-up, Plankton Is Pushy. Jonathan lives in South Carolina with his family