Mestor's plan to weaponize time and space via genetically engineered slug eggs and tractor beam technology vs. the Doctor's effort to dismantle it

The Doctor and Azmael uncover the horrifying breadth of Mestor’s plan as the twins calculate the planetary consequences. Azmael acknowledges the flaw in Mestor’s tractor beam scheme while the Doctor …

The Doctor investigates the genetically modified slug eggs in the hatchery, realizing their terrifying purpose. As Peri grows impatient, he methodically dissects an egg to reveal its resistance to extreme …