Thunderbirds Are Go: S1 E1 - Ring Of Fire, Part 1

S1, E1: A powerful underwater seaquake turns a busy day for International Rescue into a perilous one. Gordon's mission is to rescue a research team trapped in an undersea lab, but in doing so he discovers a chain of seismic destabilisers positioned along the bottom of the ocean floor. Lady Penelope is contacted to help the Thunderbirds find the person responsible.