In the near future, a group of heroes known as the Thunderbirds faces their greatest challenge. Scott Tracy, the second son of the family, has set aside his dream of being part of the famous worldwide mission carried out by his family, which is based on rescuing people in danger thanks to impressive vehicles and advanced technology. However, everything changes when a wicked villain, the deranged reptilian La Fiera, manages to infiltrate the Thunderbirds' secret base and kidnaps Scott's childhood friend, young Alan Tracy.
With their family in danger and La Fiera's threat looming, Scott decides to put aside his doubts and join his brothers: Virgil, Gordon, and the small but brilliant Alan. The brothers must team up with their father, Jeff Tracy, and their brave childhood friend, Tin Tin, to stop La Fiera. The mission will take them through spectacular landscapes and thrilling rescues as they face unimaginable dangers.
As the action unfolds and time runs out, the Thunderbirds must prove that true bravery is measured not only by technology but also by the love and loyalty among brothers. As they fight to save Alan and the world, they will learn that teamwork will always be their greatest strength. Will the Thunderbirds save the day before it's too late?