List of Prime episodes

Season 1: 2010-2011

#	Title	Writer	Director	Original airdate	Production code
1	"Darkness Rising, Part 1"	Duane Capizzi	David Hartman	November 26, 2010
After eliminating Cliffjumper, the Decepticons target Arcee and three humans become involved in the Transformer war.
2	"Darkness Rising, Part 2"	Nicole Dubuc	David Hartman	November 26, 2010
The Autobots attempt to rescue Cliffjumper, whom they believe to be alive, only to discover that the Decepticons have been experimenting on him with Dark Energon.
3	"Darkness Rising, Part 3"	Marsha Griffin	Todd Waterman	December 1, 2010
Optimus Prime and Ratchet investigate Megatron's plans with Dark Energon, while Agent Fowler is abducted by the Decepticons.
4	"Darkness Rising, Part 4"	Steven Melching	Shaunt Nigoghossian	December 2, 2010
The Autobots and the three kids rescue Fowler while Optimus and Ratchet continue fighting Megatron's Dark Energon zombies.
5	"Darkness Rising, Part 5"	Joseph Kuhr	Vinton Heuck	December 3, 2010
With Megatron's plan revealed, the Autobots attempt to stop him using the space bridge to send Dark Energon to Cybertron.
6	"Masters & Students"	David Slack	Todd Waterman	February 11, 2011
While Skyquake battles Optimus Prime, Starscream recovers the nearly dead Megatron.
7	"Scrapheap"	Marsha Griffin	Shaunt Nigoghossian	February 18, 2011
While Optimus and Arcee are trapped in the Arctic, the base is invaded by deadly Scraplets.
8	"Con Job"	Steven Melching	Vinton Heuck	February 25, 2011
Bulkhead awaits a visit from his buddy Wheeljack, but his arrival does not go as planned.
9	"Convoy"	Joseph Kuhr	Todd Waterman	March 4, 2011
The Autobots are attacked by a new foe while assisting Fowler with transporting the DNGS.
10	"Deus ex Machina"	Nicole Dubuc	Shaunt Nigoghossian	March 11, 2011
When Bulkhead makes a discovery in Greece, the race is on to recover an Energon Harvester before new Decepticon arrivals Knock Out and Breakdown get it.
11	"Speed Metal"	Dean Stefan	Vinton Heuck	April 9, 2011
Jack is drawn into the world of street racing to impress Sierra, and is aided by Bumblebee, but they encounter Knock Out as well.
12	"Predatory"	Marsha Griffin	Todd Waterman, Kirk Van Wormer (co-director)	April 16, 2011
When Arcee takes Jack on a routine mission, Airachnid turns up, putting him in danger.
13	"Sick Mind"	Steven Melching	Shaunt Nigoghossian	April 30, 2011
When Optimus is infected by a Decepticon plague, Arcee and Bumblebee sneak aboard the Nemesis to find a cure in Megatron's mind; but Starscream and Knock Out conspire to euthanize the comatose Decepticon, jeopardizing the mission.
14	"Out of His Head"	Nicole Dubuc	Vinton Heuck	May 7, 2011
While Starscream's plans for leadership come to a head, a vengeful Megatron takes control of Bumblebee's mind.
15	"Shadowzone"	Marsha Griffin	Todd Waterman	May 14, 2011
Starscream resorts to reviving Skyquake with Dark Energon, but his undead warrior is trapped in another dimension with the kids after a GroundBridge incident.
16	"Operation: Breakdown"	Steven Melching	Shaunt Nigoghossian	June 18, 2011
Bulkhead must swallow his pride if he is to rescue Breakdown when he is captured by MECH.
17	"Crisscross"	Joseph Kuhr	Vinton Heuck	June 25, 2011
Airachnid teams up with MECH to plot her revenge on Arcee and Jack, targeting Jack's mother, June.
18	"Metal Attraction"	Nicole Dubuc	Todd Waterman	July 9, 2011
Bulkhead and Arcee battle Airachnid and Breakdown for a magnetic weapon.
19	"Rock Bottom"	Tim Jones	Shaunt Nigoghossian	July 16, 2011
Starscream learns his place under Megatron the hard way when he and his leader are trapped in an abandoned Energon mine with Arcee, Bulkhead, Jack, and Miko.
20	"Partners"	Mike Johnson	Vinton Heuck	July 23, 2011
Arcee lets her lust for vengeance cloud her judgement when the disgraced Starscream asks to join the Autobots.
21	"T.M.I."	Joseph Kuhr	Todd Waterman	August 7, 2011 (Canada) September 10, 2011 (U.S.)
Bulkhead is accidentally uploaded with the information from a data cylinder, which slowly kills him.
22	"Stronger, Faster"	Mairghread Scott	Shaunt Nigoghossian	August 14, 2011 (Canada)
Ratchet 'finalizes' the synthetic energon formula and uses himself as a test subject, but it ends up having some negative side effects.
23	"One Shall Fall"	Joseph Kuhr and Duane Capizzi	Vinton Heuck	August 21, 2011 (Canada)
A prophecy predicts dark times ahead, which Megatron intends to see through.
24	"One Shall Rise, Part 1"	Nicole Dubuc and Duane Capizzi	Todd Waterman	October 1, 2011
The Autobots discover that Dark Energon is responsible for an epidemic of natural disasters.
25	"One Shall Rise, Part 2"	Marsha Griffin	Shaunt Nigoghossian	October 8, 2011
Megatron offers his aid to defeat Unicron, but the Autobots are wary of such an alliance.
26	"One Shall Rise, Part 3"	Steven Melching	Vinton Heuck	October 15, 2011
Jack learns more about Optimus Prime's history on Cybertron while the Autobots and Megatron continue their battle at the Earth's core.

Season 2: 2012

#	Title	Writer	Director	Original airdate	Production code
27	"Orion Pax, Part 1"	Nicole Dubuc	Vinton Heuck	February 18, 2012
Megatron manipulates the impaired Optimus into joining the Decepticons.
28	"Orion Pax, Part 2"	Mairghread Scott	Scooter Tidwell	February 25, 2012
The Autobots search for the Decepticon space bridge so they can send Jack to Cybertron.
29	"Orion Pax, Part 3"	Joseph Kuhr	Shaunt Nigoghossian	March 3, 2012
Jack and Arcee undertake a dangerous mission on Cybertron to access Vector Sigma, while Orion begins to rebel against Megatron.
30	"Operation Bumblebee, Part 1"	Marty Isenberg	Todd Waterman	March 10, 2012
Bumblebee questions his worthiness to his team after he is compromised.
31	"Operation Bumblebee, Part 2"			March 17, 2012
Bumblebee discovers that MECH and Starscream are responsible for his troubles; Ratchet confronts demons from his Cybertronian past.
32	"Loose Cannons"			March 24, 2012
A legendary Autobot returns to Earth to look for a new Decepticon, but Optimus finds that something is not right with the rogue Bot.
33	"Crossfire"			March 31, 2012
Airachnid and Starscream struggle to control an Insecticon warrior.
34	"Nemesis Prime"			April 7, 2012
Optimus Prime becomes destructive while MECH reveals their master plan.