| "Grandma Tracy (TB2015)/Missions" is Under Construction.|
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Ring of Fire Part 1Edit
Ring of Fire Part 2Edit
Virgil and Grandma Tracy are meeting up with Lady Penelope in London when a EMF generator cuts the power out to the entire city and anything over it (including Thunderbird 2). With the help of Grandma Tracy, they both track down the source of the power disruption and put a stop to it.
Chain of CommandEdit
Up from the Depths Part 1Edit
Deep in the Mariana Trench a survey team encounter the TV-21, a prototype Thunderbird vehicle that was flown by Jeff Tracy, when a systems failure causes the ship to be stranded on the seabed. International Rescue arrives to rescue the crew but the Mechanic suddenly takes control of the surveyor and uses it to crush Thunderbird 4. Gordon gets out just as his ship is destroyed and now must use the TV-21 to rescue the crew. Meanwhile, Lady Penelope and Parker are investigating into how the Hood is communicating with the Mechanic.
Up from the Depths Part 2Edit
After the Mechanic's ship flees the scene with the TV-21 Scott chases after it but Thunderbird 1 is unable to grab the enemy ship and suffers damage. The Mechanic then steals a GDF vault containing iridium, with Ned Tedford inside, and sends his ship into space. With two Thunderbirds out of commission Thunderbird 3, with help from MAX, is modified with weapons so that Alan can fight the ship while Scott tries to recover the vault and the TV-21. Meanwhile, Kayo, Lady Penelope and Parker head for Scotland to search for the Mechanic.
Grandma Tracy is keeping track of all the missions on the ground as they are swamped with incoming calls for help. She suggests Scott gives Brains a lift on his way to K2 and later tells Virgil to help Brains out moments before he lands back on Tracy Island.