The ARC has been shaken by the disappearance of Abby, Connor & Danny. The government has appointed entrepreneurial-scientist Philip Burton to take charge of the operation, with a brand new building & new team. Ex-soldier and zoologist Matt, the highly efficient if unconventional Jess, mysterious Gideon & anomaly-travelling Ethan all join the team, but are they ready for the challenges ahead? Danny continues to fight his way through a Pliocene age Rift Valley, desperate to return to the team with a vital secret that will change their whole outlook. With a new team and new creature threats, the ARC team are facing their toughest challenges yet.