When Bryan and Finola investigate a mysterious, otherworldly square that has appeared in a field, they come to understand new revelations about our planet. Maddox meets with an old contact.
When the debris creates a strange rainstorm over a farm in Nebraska, Bryan and Finola must treat the situation like they are stepping foot onto an alien planet.
INFLUX steps out from the shadows, weaponising the Debris in a terrifying experiment. Finola struggles to keep her newfound knowledge from affecting her work.
Debris drags metal and alloy from an evacuated town for insidious purposes. A genetic anomaly arises. Bryan withholds a secret from Finola. Maddox investigates a shadowy organisation.
MI6 agent Finola and CIA agent Bryan Beneventi are jointly investigating alien spacecraft debris that has been falling to earth over the past six months. Some strange phenomena have been occurring wherever the alien spacecraft debris appears.
When the team investigates a group of teenagers who are using Debris to kill the elderly, Bryan faces increasing pressure from Maddox to get answers out of Finola.
Bryan and Finola undertake a dangerous operation into an INFLUX compound in order to rescue George Jones. But Maddox and Ferris have their own plans for how the mission should be carried out.
Bryan and Finola head to Maine to pursue an INFLUX lead, but they discover a volatile situation where a young girl has lost her father to Debris. Meanwhile, Maddox learns Anson's secrets.