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Where is airing: Cartoon Network
How many episodes in 4 season: 26 episodes
Overconfidence leaves the Bee Team unprepared when they face a Stunticon that can fire guided missiles on the desert ground above a nuclear waste disposal site.
The harried Autobots' Stunticon enemy proves more formidable and crafty than they anticipated, using his guided missiles to threaten a nuclear waste disposal site.
Grimlock begs to learn new fighting methods from a reluctant Drift when the Autobots travel to the Antarctic.
After his reckless actions cause the escape of a dangerous Sharkticon, Sideswipe goes out of his way to recapture the 'Con and prove his value to the team in fear of getting replaced by a younger, and faster, newcomer - Rescue Bot Blurr.
The Bee Team discovers a mysterious artifact that has a strange effect on Cybertronian minds, turning the bots against one another! Can the Bee Team get it together in time to keep obsessed treasure-hunter Springload from accidentally destroying Crown City?.
Bee, trying to prove that he can be as cool as Sideswipe and his "intern" Blurr, struggles to lead the Autobots against two Stunticons who stole a trailer full of Cybertronian weapons.
After once again accidentally combining into the Ultra Bee Team Combiner, the Autobots find Sideswipe has split into two individuals - each being one extreme of his personality. Now, the two Sideswipes must overcome their differences and learn to work together as the Bee Team pursues Stunticon Drag Strip, who stole a dangerous Cybertronian device - the Gravitic Adjuster.
Strongarm flexes her detective muscles to solve a baffling series of Decepticon thefts; she may need to stand up to her teammates in order to bring a couple of perps to justice.
The Bee Team learns about Drift's past when his former mentor Shadow Raker comes to Earth to recover something Drift has taken from him - Slipstream and Jetstorm.
An experiment in combining accidentally causes the Autobots to swap personalities. Stuck in the wrong bodies, the team is called on a mission to defeat the Stunticons in a road race.
Strongarm worries that her Academy classmate Nightra may still harbor a grudge, but when a powerful foe comes after her old friend, Strongarm and the Bee Team put their sparks on the line to protect her. Soundwave also swears revenge on Hi-Test, one of his former Activator Mini-Cons, when he failed to acquire Strongarm's Decepticon Hunter.
An ancient Cybertronian signal sends Bumblebee and chivalry-obsessed Fixit to a remote English island for a routine scouting mission that quickly turns into the duo's very own call to adventure.
Grimlock acquires uncontrollable Super Speed, which proves to be a problem when the Autobots have to deal with a revenge-minded Simacore and his army of Mini-Con clones.
A runaway train's fusion engine is up for grabs and the Stunticons are in pursuit, so the Bee Team must do all it can to prevent them from getting the cargo. An additional threat arises as the train could potentially crash into Crown City Train Station.
Bee's new leadership style is put to the test when Motormaster and the Stunticons go after a Meteorite Deflector Dish; the Bee Team is forced to combine and improvise together to take on Menasor.
Optimus Prime arrives to recruit Drift for a special mission, sparking a competition between Sideswipe and Strongarm over who'd be better suited to take Drift's spot; the Autobots go to the moon to recover a dangerous weapon.
Steeljaw and his pack return and launch an attack on the Scrapyard, forcing the Autobots to abandon their home base; Sideswipe's fear of abandonment threatens the Bee Team when they face their foes again at the Crown River Dam.
Bumblebee, Sideswipe, and Strongarm are captured by Steeljaw's Decepticons; Fixit works to keep Steeljaw and the 'Cons at bay while the captured Autobots attempt to escape.
The Bee Team struggle to recover a canister with radioactive fuel rods from Steeljaw and his pack, while Grimlock struggles to learn the difference between work and play.
Strongarm struggles with the correct way to treat a prisoner while also helping the Bee team keep Steeljaw and his pack from wreaking havoc at the nuclear power plant.
Soundwave finally escapes the Shadowzone to set up a Beacon Generator intended to summon Megatron! While the Bee Team engages the notorious Decepticon atop a skyscraper, Optimus Prime takes on Laserbeak in the skies over Crown City, Sideswipe learns a lesson in considering the consequences of his actions.
When Underbite eats part of the Autobots' GroundBridge, the Bee Team has to chase the teleporting Decepticon through various locations.
After the Energon seeking Wingcode infects the Autobots with a virus, Bulkhead joins Grimlock in his hunt for the Decepticon.
The Autobots' pursuit of Steeljaw hits an unexpected roadblock when Strongarm's old mentor Detective Dropforge arrives from Cybertron with orders to arrest the Bee Team.
When Optimus returns with old friends and dire warnings of a Cybertronian invasion of Earth, the Autobots must split up to defend their old home and their new one, with the Bee Team returning to Cybertron, while Optimus and his All-Stars stay behind to defend against the invasion's advanced force.
As the Bee Team struggles to liberate Cybertron from the Decepticon controlled High Council, Optimus and his All-Stars fight back the advance force of an Earth-bound Cybertronian invasion!