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.

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.