The fourth season of Star Wars: The Clone Wars, also known as Battle Lines, consists of twenty-two episodes. It debuted on September 16, 2011 with "Water War" and concluded on March 16, 2012 with "Revenge".

Episodes Edit

401 WW

4.01 | September 16, 2011
When the king of Mon Cala is assassinated, talks break down between the Mon Calamari people and the Quarren, co-inhabitants of the aquatic world.

402 GA

4.02 | September 16, 2011
Anakin Skywalker and the rest of his Jedi team have been overrun by the Separatist surprise attacks led by Riff Tamson while Prince Lee-Char and Ahsoka must evade capture on their own.

403 P

4.03 | September 23, 2011
The Republic and Gungan forces have been captured by Riff Tamson and his Karkarodon enforcers.

404 SW

4.04 | September 30, 2011
When the leader of the Gungans, Boss Lyonie, is injured it's discovered there is an uncanny resemblance between the Boss and Jar Jar Binks.

405 MM

4.05 | October 7, 2011
After groundquakes have devastated the planet Aleen, a Republic relief effort arrives, including the droids R2-D2 and C-3PO.

406 ND

4.06 | October 14, 2011
C-3PO and R2-D2's bizarre caper continues.

407 DOU

4.07 | October 28, 2011
When Anakin is forced to temporarily turn over command of his clone troopers to a new commander, the Jedi Pong Krell, tensions begin to run high as the clones are assigned with a very deadly mission to take the capital of Umbara.

408 TG

4.08 | November 4, 2011
General Krell orders Captain Rex and the clone troopers of the 501st Legion to conquer a heavily fortified Umbaran airbase, and will not accept anything less than victory.

409 POD

4.09 | November 11, 2011
After the Republic conquers an Umbaran airbase, General Krell orders Rex and his men on towards the heavily fortified capital.

410 COK

4.10 | November 18, 2011
With two of his men facing execution for disobeying orders, Captain Rex must confront his overly aggressive commander, General Krell.

411 K

4.11 | November 25, 2011
Zygerrian slavers are behind the sudden disappearance of an entire colony of people on the planet Kiros.

412 SOTR

4.12 | December 2, 2011
To locate the missing colonists, Anakin, Obi-Wan and Ahsoka go undercover to infiltrate the slavers on Zygerria.

413 EFK

4.13 | January 6, 2012
Anakin tries to convince the Zygerrian Queen that she too is a slave and pawn in an evil Separatist plot.

414 AFIN

4.14 | January 13, 2012
A peace conference between Separatists and Republic delegates is interrupted by Lux Bonteri, the son of a late Separatist Senator, who involves Ahsoka in his dangerous search to find justice for his mother's death.

415 D

4.15 | January 20, 2012
When the Jedi learn of a Separatist plot to kidnap Chancellor Palpatine, one of them must go deep undercover as a hardened criminal to extract information from the conspirators.

416 FAE

4.16 | January 27, 2012
Fleeing across the galaxy with criminal fugitives, a disguised Obi-Wan, Cad Bane and Moralo Eval are tenaciously pursued by Anakin and Ahsoka, who have no idea they're chasing their friend.

417 TB

4.17 | February 3, 2012
The disguised Obi-Wan accompanies Cad Bane and Moralo Eval to Serenno, where they enlist in a brutal competition with other bounty hunters from around the galaxy to determine who will participate in a plot to kidnap the Chancellor.

418 CON

4.18 | February 10, 2012
The Chancellor travels to Naboo to preside over a public ceremony, guarded by Jedi Knights.

419 M

4.19 | February 24, 2012
Count Dooku is determined to have revenge against the Nightsisters of Dathomir after their betrayal.

420 B

4.20 | March 2, 2012
An aimless Asajj Ventress joins a team of bounty hunters under the leadership of young Boba Fett.

421 B

4.21 | March 9, 2012
The dark warrior Savage Opress is on a quest to find his long-lost brother.

422 R

4.22 | March 16, 2012
Savage and Maul, now reunited, pursue Obi-Wan Kenobi in search of revenge, and the Jedi Knight finds himself forced to unite with a surprising ally to defend against the deadly siblings.
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