Back at full strength, with Abby, Connor, Lester, Jess and Matt on board - the ARC team must race against time once again in its fight to save the public from the terrifying creatures appearing through the anomalies. The members encounter vicious burrowing creatures, enormous underwater predators, a raptor on the rampage in Victorian London; a Tyrannosaurus Rex prowling the streets and a mass of ferocious future-beetles laying siege to the ARC Headquarters.

But even as the team faces its most formidable challenges yet, it may have more to fear from inside the organisation. Can any of them they trust the new lab assistant April? Why is Connor set on helping Philip? And can Matt and Abby do anything to stop them? As secrets, plans and betrayals come to light, it’s time for the team to decide just whose side its on…