1. With Quinn trapped in the Pliocene, Abby and Connor are rescued by Sarah and Becker. A new character is introduced; a young woman named Rana Oriana who escaped from a protest in the future after a pack of Dilophosaurs attacked everyone and killed all her friends. The Dilophosaurs find their way into the present Trafalgar square.
2. Danny finds an anomaly that leads him to the Napoleonic era, and discovers the artefact from series 3 being used by Napoleon. A woman comes into the ARC demanding to see Lester. The team must deal with this stranger who has no memory of her past life, but has a striking identical resemblance to Jenny Lewis. Could this be Claudia Brown?
3. An anomaly opens in an aquarium during a killer whale show. A future giant parasitic leech made up of several tentacles kills the killer whale and goes on a rampage through the aquarium, getting bigger as it sucks more blood. Can Becker stop this creature before it escapes.
4. Abby and Connor begin to remember Claudia Brown but still can’t piece together Cutter’s dilemma. Meanwhile, Quinn tries to find out more about the artefact, but is thrown into the ship’s brig, while the artefact opens an anomaly letting in a pack of plesiosaurs.
5. Sarah comes back from visiting her parents on the countryside only to have her train be flooded and destroyed by an underwater anomaly. She and several other end up being chased through the sewers of the destroyed subway be future amphibians that can control electricity with cilia on their stomachs. Called the future hunter. Can the team save her despite only detecting the anomaly on the news?
6. Quinn finally escapes the Napoleonic era and comes back to the team with the artefact. The team finally regain the technology required to open and close anomalies. But a drastic change Danny made in the past ruptures the space-time continuum, creating “blue” anomalies. These lead to parallel universes and let in very strange creatures. The team deal with their first blue anomaly letting in a giant, very strange, indestructible version of the future predator
7. On London bridge, A herd of Diplodocus come through, causing damage across the city and a pack of Allosaurs follow them. The truth of the anomalies is revealed by Claudia who remembers everything in an epiphany. She and the team start a save Cutter and the world campaign.
8. Strange occurrences happen dealing with people trying to put hits on Claudia. These turn out to be half me half creature assassins from the future created by the blue anomalies. Apparently there is someone in the future who doesn’t want Claudia starting her campaign.
9. Continuation of episode 8, involving larger more cybernetically enhanced monster men.
10. The final showdown with the monster men ends up destroying the ARC completely. As the move to the home office proves to be restricting, more is found about the artefact and the blue anomalies. A doppelganger of Abby betrays the team, which causes Abby to run away and Lester and Connor to be hospitalized.
11. The team goes to the future to face the boss. The future predator returns as a special forces soldier holding a gun to Danny’s face.
12. Clones of the future predator soldiers threaten Earth in all times, but the answer to stopping him is in the blue anomalies and the artefact. The cliff-hanger ends with all the clones being non-existent but several alterations to Earth are now in place. For example, weird fleshy poisonous trees and jungles.