Picking up from the first season finale, Krytus begins the search for his teammates.

Krytus frees the rest of his team and the Battle Force 5 must master the fusion process in order to defeat the Red Sentient 5. The combination SkyKnife debuts.

The Battle Force 5 search a Mobi wreck for important Sentient Data Logs. The problem is that the wreck is at the bottom of the Vandal Ocean. The combination Tangler Command Center debuts.

A new Vandal shows up and challenges Kalus for the title of Vandal Warlord: Grimian! The combination SmashClaw debuts.

Battle Force 5 learn from Zemerik that there is a rebellion against the Red Sentients on one of the Red Sentient moons. Tezz Volitov joins the Battle Force 5! The Splitwire debuts.

The team have to search for and destroy the Double-Helix Crystal. Stanford must overcome his insecurity whenever he fails, and Vert learns that he plays an important role in a Sentient legend called the "Crimson One". The combination SonicSlash debuts.

The Battle Force 5 decide to hunt down the Red Sentients' re-spawn chambers. Tezz must overcome his arrogance as Sage deals with Stanford's superstition. The combination ShockBlade debuts.

When the team escapes into a desolate zone, they discover a Diad collecting Blue Sentient shells. But when the Diad is captured by a pursuing Kyburi, they must rescue him from the Red Sentient homeworld before the Reds learn of his mission.

The team must locate a terraforming device which could restore Blue Sentient civilization, and the Ice Zone it's in prompts Vert to bring in a new recruit. A.J. Dalton joins the Battle Force 5! The GearSlammer and the combination RigSaw debut.

The Battle Force 5 search for a way into the Red Sentient Homeworld, only to end up on the Vandal homeworld. Tezz learns compassion and to be more of a team player, as he and Vert discover the Vandals' most important secret: their vehicles are being built by an enslaved race of super-engineers.

When a freak accident causes Sherman and Grimian to switch minds, the Battle Force 5 must rescue Sherman from the Vandals and pull himself together before Grimian relays Earth's coordinates to Krytus.

Battle Force 5 must enlist the aid of the Order of the Flying Fists to drive the Red Sentients away from Earth. Zoom's former master is more than what he seems.

To prevent Krytus from locating Sage, Battle Force 5 enlist the aid of pro racer and Indianapolis 500 winner Dan Wheldon in order to destroy the scanner that's being used to search the Multiverse.

Battle Force 5 meet Rawkus, a golem responsible for maintaining the balance of the Multiverse. Can Zoom gain his trust when the Red Sentients steal his Power Core Stone?

Rawkus brings Vert and Zoom to the Shadow Zone to find the lost minds of the Blue Sentients. The key, however, lies within Sage.

The Battle Force 5 race against time to save Sage's mentor, Sol.

Under the pretense of stopping Krytus from upgrading the Red Sark, the Battle Force 5 ally with Zemerik on a mission to an ancient Sark Factory. However, Zemerik has other plans for the factory. Meanwhile, a lightning strike permanently fuses the Buster and Tangler.

Vert is reunited with his long lost father! After catching up on their relationship, he leads the Battle Force 5 to a Red Sentient Mobi that Tors-10 was constructing.

Vert gets trapped in the Shadow Zone with Krytus and are forced to work together to get out! If not, the entire Multiverse will be destroyed!

The Battle Force 5 are transported 1,000,000 years back to the Sentients' distant past! Not only must they battle their way back home in an ancient gladitorial game, but they must make certain history unfolds the way it was originally supposed to.

The Battle Force 5 learn of Grimian's alliance with Krytus! Meanwhile, Tezz's scientific curiosity gets him captured by the Vandals!

Vert must work with Krytus to prevent Sage from creating a doomsday device that will end the Multiverse! But is this really the truth? The secret to the Red Sentients' Re-Spawn technology is revealed.

Pursued by the Red Sentients, Zemerik and Zug flee to the Torborian Badlands. While Krytus pursues him, the Battle Force 5 seek vital information from Zemerik's hard-drive that would mean the end of the Sark!

When the Vandals attack the Kharamanos homeworld, the Battle Force 5 must help the Kharamanos stop the Vandals once and for all!

The war with the Red Sentients comes to its climax, as Krytus unfreezes the Red Sentient population by releasing a beta decay wave from a destroyed Battle Zone. At the same time, the Blue Sentient shells are rediscovered as the BF5 attempt to revive the Blue Sentient race.