With the Guardian in Negative Space, the Gang believe they have saved the multiverse until a catastrophic event at Bremin High suggests otherwise. Will the Gang be forced to expose their powers and magic in order to save the school?

The demon closes in for the kill as the boys finally work out how to return home.

Sam’s loyalty to the boys is tested to the limit when the demon targets his girlfriend, Mia.

The boys' problems are compounded when their parallel mothers all succumb to mysterious afflictions.

The boys are shattered to learn who is responsible for everything that’s happened to them.

Felix discovers the other boys unwittingly possess the magic needed to fight the evil thing that is threatening them.

Sam must face up to his flaws as the demon unleashes its most brazen attack yet - on Bremin High.

The Nowhere Boys are back and Luke's attempts to convince the Gang that a new threat is imminent are dismissed – until the threat proves too big to ignore.

As the Gang fights off the latest threat, Jesse's preoccupation with a cyber bully puts their biggest secret at risk. When menacing creatures attack again, the Gang fight back by sending them out of this world – but at what cost?

Bates is on the warpath. Convinced he is close to exposing a conspiracy gripping Bremin High, he interrogates the Gang. Will one of them crack under the pressure? Meanwhile, the arrival of a stranger puts Heath under the spotlight.

Desperate to get Felix's book back, the Gang search for Zeb, the mysterious stranger. But when Luke is kidnapped, they all find themselves drawn into a dangerous trap.

When a friend suddenly becomes an enemy the Gang are left shaken. Meanwhile Jesse confronts his cyber bully and scores an unexpected win.

While the gang do battle with one of their own, they're forced to face some home truths. But that's not all they learn – did they have Zeb all wrong?

The Nowhere Boys take a wrong turn in their quest to find Zeb, landing them in danger and on the run. Meanwhile Ben and Ellen decode clues left by Zeb and try to find a way to bring them home.

Captured, Nicco and Luke are interrogated and forced to confront alternate versions of themselves. Heath and Jesse learn that their friends are imprisoned in a high-security facility and plan a breakout.

The Gang and their doubles join forces to try and escape their captors amidst increasing Nematode attacks, but can they repair the Talisman in time to avert tragedy and find their way home?

The Gang contact Zeb and learn that one of them is the all-powerful Guardian of the multiverse and must travel to Negative Space to save theirs and all worlds from the Entity, the most powerful enemy they've ever faced. But who really is the Guardian.

The gang arrive in Negative Space for a final showdown with the Entity – the fate of the multiverse is in their hands. If only the Guardian could rembember the plan.

Jake comes face to face with the father he never had, as Phoebe lays claim to the four boys.

The boys discover the truth about Phoebe as the demon evolves to take on human form.

A trip back to the forest presents both a chance to return home as well as redemption for Andy.

The boys grapple with the discovery that they are now total strangers to their friends and families. Banding together, they try to get to the bottom of their terrifying predicament.

Andy’s obsession with finding a rational explanation nearly comes to grief under the wheels of the school bus.

With Saskia, their new water element, the boys do a spell to find Andy but it backfires landing Jake in serious trouble.

The boys’ desperation to prove they still exist leads Sam to discover his doppelgänger.