One idea could be that Virgil is kidnapped by an old enemy of the Tracy family who wants to use him as bait to get to International Rescue's secrets. Another could be that he's abducted by a group who mistake him for someone else with valuable knowledge. Maybe a mad scientist kidnaps him to force him to help with a dangerous experiment.
Family support is also a big theme. His brothers play a crucial role in his recovery. They are always there to help him through the tough times, whether it's physically or emotionally.
The motive could be ransom. The kidnappers might know that the Tracy family is wealthy and figure they can get a large sum of money for Virgil's safe return.
One common theme could be the other characters' reactions to Virgil being hurt. For example, how his brothers might step up to support him or take on his responsibilities. Another theme might be Virgil's own struggle to recover and get back to his duties.
One great 'thunderbirds are go scott hurt fanfiction' might be 'Scott's Trial'. It focuses on Scott facing a difficult situation and his journey through it. The author does a great job of portraying his pain and the way he overcomes it within the Thunderbirds universe.
You can try looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. There are often many different Thunderbirds fanfictions on these platforms, and you can search specifically for ones involving Virgil getting hurt.
Maybe Virgil's injury affects his ability to perform his normal duties in future missions. This could lead to some self - doubt and a struggle to regain his confidence. The other characters would then have to support him both physically and emotionally, like Scott giving him pep talks and helping with his physical therapy.
His family would be extremely worried. Scott, as the eldest, would likely take charge immediately. He'd be focused on getting Virgil the best medical care possible and coordinating with the rest of the team to ensure his safety.
One interesting Thunderbirds fanfiction could be a story where the Thunderbirds team has to face an unexpected natural disaster on a new planet. It would be full of action as they use their unique skills and machines to rescue the local inhabitants.
Perhaps there is a threat that involves both criminal elements and dangerous natural phenomena. The FBI agents from Numb3rs work with the Tracy family from Thunderbirds. The Numb3rs characters can use their data analysis and crime - solving skills, while the Thunderbirds use their amazing vehicles and rescue capabilities. For example, they could be dealing with a group of thieves who are stealing valuable resources during a series of earthquakes.