Itch obtains an unusual rock and discovers it could be a new element. But when everyone at school gets sick, Itch wonders if the rock is to blame.
When Flowerdew discovers the rock's true power, he arranges to ship it to Switzerland for further testing, but with the help of his friends, Itch manages to steal the rock back before it's too late.
Greencorp discover the rock's missing and Flowerdew goes to desperate measures to get it back. Itch has a run in with some of the Bikers, and Cake, sick with radiation poisoning, tells Itch the rock must be destroyed.
Itch, Lucy, Jack and Tim take the rock to the Mining Institute for further testing in a bid to help Cake, but the group risk losing the rock when the Bikers arrive try to take it.
After the group are rescued from the Mining Institute, they escape Seaburgh with Flowerdew and the rock, only to become stranded when Flowerdew steals the rock, leaving them helpless and lost.
Itch, Tim and Lucy try to track down the rock, only to be set upon by the Bikers, while Lucy is pursued by a mysterious figure. In Seaburgh, Jack works with Darcy to investigate Greencorp.
While Lucy is questioned by government agents, Itch and Tim escape after stowing away on a bus before being forced to abandon it to evade police, leaving them stranded in the outback.
Itch and Tim struggle to survive in the harsh outback after evading police, before Itch is double-crossed by Tim. Back in Seaburgh, Lucy, Jack and Chloe uncover the truth about Greencorp.
After surviving a night in the outback, Itch comes across a roadhouse where he boards a bus headed north, while his dad and Australian Intelligence work to track him down.
Itch risks his life by venturing to an abandoned mine shaft to get rid of the rock, leading to a final showdown with Tim and Flowerdew, with Itch managing to defeat them both and destroy the rock.
Dead fish washing up on the beach and a mysterious explosion at sea leave Itch and the gang wondering if Greencorp are up to their old tricks.
Itch and his family move to a secret mansion under the protection of Australian Intelligence as Itch and his friends try to uncover what's killing all the fish.
Itch, Darcy and Lucy try to stop the Mayor from reopening the beach, while Tim throws a party to win his friends back, and together they hatch a plan to investigate Greencorp.
Itch and Darcy take a trip to the local Country Club to get information, while Lucy and Tim visit Roshanna to try to find out about Greencorp plans.
In an effort to stall the grand beach reopening, Itch and Jack try to prove the water is toxic, while Tim and Chloe work to try and access Lannister's hard drive for more clues.
Itch and the gang go on separate missions following the information on Lannister's laptop and make an unusual discovery, while Tim tries to track down Roshanna following her escape.
Itch and Tim go to meet a mystery contact who has information on Greencorp, while Lucy follows Lannister to get his fingerprints and makes a major discovery.
Itch, Tim and Lucy come face to face with an old enemy and uncover Greencorp's evil plan which threatens disaster for Seaburgh - and the entire planet.
Itch, Tim and Lucy find themselves trapped at the hands of Greencorp, while Darcy and Jack race against time to get the only thing that can stop their evil plan.
When Greencorp's plan is put into action, the entire town of Seaburgh is at risk of major devastation, leaving Itch and the gang to save it before it's too late.
