Dr. K sends his army of zombots to Bubble Town to attack- but shortly thereafter they attack him. Kilobot has his own plans- plans that don't include Dr. K. Now it's all out war as Maximix sacrifices himself and Cubix's cubes get disseminated amongst the Zombot army.
Kilobot, sick of Dr.K's shortcomings strikes out on his own and returns to Robix Corp to steal the tools necessary for world domination that K failed to obtain. But it's not as easy as he thought it would be and he is forced to impersonate Maximix to get the job done.
The kids find and activate the last of the Mechanical Men - Bubble Town's earliest robots - outmoded years ago by Nemo's EPU-version. But when the old clunker has trouble adjusting to the modern world, the kids add an EPU to his system. It gives him odd powers and the desire to find his beloved old master...a funny robot-loving boy who became Dr. K.
It's up to Connor, the rest of the Botties, and surprisingly Dr. K to restore Cubix, Maximix, ward off the zombot army, prevent all of Bubble Town's robots from Kilobot's evil brainwashing and beat him once and for all!
There's a spoilsport in Bubble Town's robot-kite flying contest: jealous Antonio, the new hovering Weather-Control Robot, who feels the skies belong to him... and will defend his place with weather-attacks on Cubix and the kids.
Chip is little to do anything so he decides to build a robot called the Chipinator so he can do everything that only tall guys can do! He finds some robotic armour at the junkyard and some robotic head but soon, Chip becomes insane and attacks Bubble Town! It's up to the Botties to stop him!
The kids and Cubix befriend a bunch of invulnerable Crash-Test Dummy Robots, but when the Dummies turn on them, the question becomes 'How do you defeat an enemy you can't possibly hurt?'
Cubix is a South Korean animated television series created by Cinepix. 4Kids Entertainment acquired the rights for an English adaption dub to the series in 2001, retaining them until their transfer to Saban Brands in June 2012. Saban Brands currently owns and manages the copyright and branding of the English adaption of the series.