Star Wars: The Clone Wars - Season 4 Episode 12 -

"Slaves of the Republic" Anakin, Obi-Wan, Rex, and Ahsoka go undercover to infiltrate the slavers on Zygerria to find the missing Colonists. Obi-Wan, Rex, and Anakin pretend to be slavers, and Ahsoka as the slave (impersonating an heiress). Later on Obi-Wan is captured for trying to help a colonist escape, and Anakin and Ahsoka are also captured by the Zygerrian Queen. Anakin struggles with his emotions as a wily Zygerrian queen forces him to take questionable actions in order to carry out his mission.