C-3PO and R2-D2

ARC undefined The C-3PO and R2-D2 arc is the second arc of the fourth season of Star Wars: The Clone Wars. It is the twenty-third arc of the series overall. It consists of two episodes. It debuted with "Mercy Mission" on October 7, 2011 on Cartoon Network, and concluded with "Nomad Droids" on October 14, 2011.