Prepare to enter a world of micro proportions with macro adventures; when Grandpa’s invention accidentally shrinks both Zak and Grandpa down to the size of insects! With the aid of one bionic arm and three ‘enhanced’ insect friends – Syd, Chowser and Willow, they are the Insectibles and find themselves facing challenges beyond their wildest dreams. They bravely trek through grass blade forests and fight the evil mecha-mosquito Adilla with her daughter, Lidia, her faithful servant, Gnat, and a whole platoon of bodybuilding cockroaches. Can Zak and Grandpa find a way to un-shrink themselves before Adilla gets to them?

Using the powers of the shrinkator, Zak embarks on a series of incredible adventures.

Using the powers of the shrinkator, Zak embarks on a series of incredible adventures.

The Insectibles discover a crucial Shrinkinator part but are forced to entrust it to the cockroaches. Concerned by Willow's neglect of her duties, Zak, Chowser, and Syd enlist Detective Rick Sting'em to investigate. Meanwhile, as Chowser undergoes a butterfly transformation, the Insectibles grapple with the challenge of keeping their mission on track.

The team faces the challenge of thwarting a colossal worm with a metal jaw from reaching the Shrinkinator. They stumble upon a task tougher than battling Adilla - babysitting baby ants. Syd's attempt to fill in as the mail carrier leads to a comical mix-up of packages, spiraling into a series of amusing adventures.