Ring of Fire: Part 1

Ring of Fire: Part 1 is an episode of Thomas' Adventures of Thunderbirds Are Go ( 2015 TV Series).

Plot
A powerful underwater seaquake turns a busy day for International Rescue into a perilous one, when it causes a research team to be trapped in an undersea lab. As they attempt to rescue them, they quickly discover a seismic de-stabiliser to be the source of the quake, and with Lady Penelope's help, learn the person responsible for this is the phantom figure known only as the Hood, who soon puts the world in danger, triggering more quakes along the notable feature of the Pacific Ocean, "The Ring of Fire."