When Duty Calls

"When Duty Calls" is the second episode in the twenty-third season of Arthur. It is a two-part episode.

Synopsis

Fern and the others try to make an upset Ladonna feel better after she finds out her family will have to move from Elwood City.

The Compson family moves to Oregon in this episode, and it's also revealed that this is the fourth time they've moved.
It is revealed in this episode that the Rapty that Bud has is his second; the first one was left behind when he moved from Guam.
- The second Rapty is then left behind at the end of the episode; however Bud does that on purpose so that he and D.W. could keep writing to each other.

The Compsons moved to Elwood City from Louisiana in "Based on a True Story."
Buster recalls leaving Elwood City for a time in "Arthur's Faraway Friend," and being afraid that his friends would forget about him.
Fern and Ladonna say that they are inspired to write their own book, like Arthur and Buster did in "Arthur's Faraway Friend" and "Buster's Back."
Arthur shows his diorama from "Arthur and the Whole Truth."
The selfie of Arthur, Buster, Muffy and Ladonna in Muffy's video was taken during "The Longest 11 Minutes."

London, from the And Now a Word From Us Kids segment, is featured in a podcast from The Military Child Education Coalition.
This is the first two-part episode to be written by someone other than Peter K. Hirsch since "Fifteen".