"Water War," the season four premiere of Star Wars: The Clone Wars, initiates a three-part arc on Mon Cala following the king's assassination, which destabilizes relations between the Mon Calamari and Quarren. As Separatist-backed forces under Riff Tamson incite civil war, Anakin Skywalker and Padmé Amidala attempt to protect Prince Lee-Char and mediate the conflict [Water War (TV Episode Guide)].