Thunderbirds Are Go! S01E17 - Heist Scociety

On an underwater hyperloop train, Lady Penelope and Parker are escorting Professor Moffat to a rendezvous with the Global Defence Force in Iceland in order to safely deliver a particle born from the Supreme Hadron Collider disaster - Centurium 21. However, the Hood is keen to get his hands on the particle and plots an elaborate robbery in order to steal it for himself. Thunderbirds 1, 2, and 4 are soon dispatched to not only rescue the trapped train and its passengers, but also attempt to foil the Hood's plan.