Episode Title:Arthur Babysits / Arthur's Cousin Catastrophe.Episode Description:Arthur Babysits: Arthur thinks that babysitting is an easy job until D.W. volunteers him to babysit Tommy and Timmy Tibble, twins with a bad reputation of being destructive and mean. After some initial struggles, Arthur gets the twins to behave by telling them a scary story.
Arthur's Cousin Catastrophe: Arthur's parents are hosting their annual family reunion. Arthur tries to avoid his cousin Mo, who has bullied him during past reunions, while his parents deal with their eccentric relatives. When a thunderstorm forces the Reads to spend the rest of the party indoors, Arthur learns that Mo has been looking for him to ask if he could give her a piano lesson.