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.
Thunderbird 1 is in pursuit of the Mechanic
The Mechanic is trying to outrun Thunderbird 1 with the TV-21
"Please use caution, Scott. The Mechanic must be piloting remotely, that means he's got n-nothing to lose"
"Scott, There’s a safe area up ahead. You can knock-out the TV-21 and bring down the plane with zero civilian casualties"
"No way Thunderbird five, that plane belongs to us and I’m going to get it back in one piece"
Scott launches a grapple at the Mechanic's craft
"Got it, now to put on the brakes"
"Scott, when I built the design for the TV-21 your dad w-wanted all the thrust I could give him. That booster is the most p-powerful one I’ve ever built"
"More powerful than Thunderbird 1?"
The Mechanic begins to boost the power of the TV-21's engines
The TV-21's thrusters start, blinding Scott in Thunderbird 1
Thunderbird 1 spins out of control
"Thunderbird 1 is going down!"
"Scott, this is Grandma. Stay calm, throttle back your thrusters."
Thunderbird 1 begins to crash-dive
"Don't worry, I won't let the TV-21 out of my sight"
"If The Mechanic is piloting the TV-21 remotely, it's got to be receiving a control signal - and that control signal must be broadcasting from somewhere"
"He can't hide from me.. Got it! The Scottish Highlands!"
"Kayo, this is a job for the GDF"
"By the time the GDF gets around to chasing signals, he'll be long gone"
"Kayo shouldn't face The Mechanic alone. I'm getting her some help"
"How would you like a second chance to get The Mechanic?"
"I'd enjoy it more than Parker likes complaining about the weather. Scotland please, Parker"
"Right away, M'lady. Of all the places to hide out, he picks the rainy one"
Thunderbird 4 is inside a pod in Thunderbird 2's docking bay
Brains is looking over the damage to Thunderbird 4
"I think we have a l-lot of work to do"
"Ever since he was a boy, your father dreamed he'd be the fastest pilot who ever flew"
"So he and Brains built the TV-21?"
"It was beautiful. A dream come true"
"Until The Hood crashed it"
"It didn't crash his dream. Your dad didn't care about being fastest anymore, he only cared about being first"
"First on the scene when people need help, first to act when someone's in trouble and instead of one ship to do it all, he built five"
"The Mechanic's craft has stopped over the GDF's high security iridium vault, the GDF are responding now"
"All personnel have been evacuated, Colonel Casey - Except one"
" Well, get him out of there!"
"He says he won't leave. He's afraid of losing his job"
'Oh and he told me to say, 'Gladys won't go either'"
"What's his name?"
"A crewman.. Tedford, Ned Tedford"
"No one's stealing the world's supply of Iridium, Gladys. Not on our watch!"
The Mechanic's craft is stealing the vault
"Get me International Rescue"
The Mechanic's craft escapes into space
"As much as I'd like to smash his toy, there's a worker trapped inside the vault"
"Ok Colonel. International Rescue is on it"
"Even with the TV-21's booster, that mass of Iridium is slowing it down big time"