Doctor Who
Warriors of the Deep: Part 1
S21 E1:
A cold war between two superpowers is being fought on Earth in the year 2084. Deep down on the ocean floor the reptilian Sea Devils and Silurians are planning an attack on a missile base, their aim is to eradicate all humans and take back the planet. As tensions begin to escalate, the Doctor arrives in orbit during a tour he is giving to Tegan.