Professor Nick Cutter's wife Helen disappeared eight years ago. When his student Connor Temple tells him of a strange creature sighted in the place of her disappearance he goes there to investigate.
Another anomaly opens in the London Underground, this time leading to the carboniferous period. When the team arrive they deal with giant arachnids but a more dangerous creature hides in the shadows.
Cutter and his team are called in to locate a giant marine reptile that ate a lifeguard at a swimming pool. When the remains of a special forces diver are sent back through the anomaly, Cutter suspects his wife Helen is on the other side.
Helen warns Nick of an anomaly at a football stadium. When the team arrive a group of infected dodos come pouring through. Meanwhile Connor's friends Tom and Duncan decide to follow Connor to see what he's up to.
When a golfer at a hotel's golf course goes missing, Cutter and his team are called in. They find a giant pteranodon that's flown through an anomaly in the sky but Nick isn't convinced the creature is the culprit.
Missing people at Wellington Zoo could be the work of a new creature that came from the future. Helen reappears offering to help but Lester and Claudia are suspicious of her true intentions.
