1Darkness Rising (1)
The Autobots go on alert as the Decepticons return to Earth in the series opener, Meanwhile a group of humans find themselves with new caretakers after stumbling into the middle of the Autobot conflict with the Decepticons.
2Darkness Rising (2)
The Autobots go in search of Cliffjumper, whose life signal is weak and find Megatron wielding the dangerous dark Energon.
3Darkness Rising (3)
Bulkhead is unknowingly shadowed by Miko as he goes to rescue Agent Fowler, who was kidnapped by the Decepticons.
4Darkness Rising (4)
The Autobots try to stave off an attack from Megatron's Terrorcons to protect their human wards.
5Darkness Rising (5)
The Decepticons and the Terrorcons go into battle against the Autobots.
6Masters & Students
Starscream pursues other interests while Skyquake battles with Optimus Prime and Bumblebee.
7Scrapheap
Scraplets invade HQ while Optimus and Arcee patrol the Arctic, leaving Bumblee and Ratchet to repel the enemy.
8Con Job
Bulkhead awaits a visit from his buddy Wheeljack, but his arrival does not go as planned.
9Convoy
The Autobots are attacked while helping Agent Fowler transport an implosion device.
10Deus Ex Machina
Miko and Bulkhead go up against Starscream and Breakdown as they go to Greece to retrieve an Energon Harvester.
11Speed Metal
Jack tries to be impressive, with Bumblebee's help, but Knockout's arrivals sends things out of control.
12Predatory
Arcee must protect Jack when a routine mission is complicated by Airachnid's arrival.
13Sick Mind
A Decepticon plague infects Optimus Prime, so Arcee and Bumblebee sneak onto the Nemesis to find the cure.
14Out of His Head
Megatron controls Bumblebee from inside his mind and influences his behavior at HQ.
15ShadowZone
The kids are stranded with Skyquake in an alternate dimension during a GroundBridge malfunction.
16Operation: Breakdown
MECH agents capture a Decepticon, and the Autobots mount a rescue.
17Crisscross
Airachnid makes a deal with Silas to get revenge against Arcee and Jack.
18Metal Attraction
The Autobots try to claim a magnetic weapon before the Decepticons get to it.
19Rock Bottom
Two patrolling Autobots end up trapped in a cave with their enemies, Starscream and Megatron.
20Partners
Starscream makes an unexpected request after he is captured by Optimus.
21T.M.I.
Bulkhead acquires a top-secret formula, and the Decepticons come after him for it.
22Stronger, Faster
Ratchet becomes a threat to everyone after he injects himself with an experimental substance.
23One Shall Fall
The Decepticons quickly try to build a space bridge before a prophesied darkness arrives.
24One Shall Rise (1)
Earth has an outbreak of natural disasters, caused by Dark Energon.
25One Shall Rise (2)
The Autobots acquire a surprising ally in their battle to save Earth.
26One Shall Rise (3)
The Autobots go to the Earth's core to fight for the planet; and Jack uncovers info about Optimus' background.