Green glowing meteorites have fallen to Earth, several have landed on a section of a large city. The local residents have taken some into their homes as souvenirs, others are still lying in the streets. The meteorites are actually alien eggs and both the Daleks and the Spugs want them so they have dispatched forces to Earth to claim them. UNIT, alerted by The Doctor are rushing to stop them. The MiB are after the eggs to research so they arrive on the scene too.
Carnage is sure to ensue.