There's been an accident in a critical facility at the worst possible time, and International Rescue are the only ones who can get there in time with the equipment to save everyone. This does not surprise International Rescue. However, the setting does - nobody told them that anyone was in contact with Equestria, and the facility in question is a branch of the Cloudsdale weather factory. Can Scott and Alan Tracy (and their wondrous machines) get to grips with an unfamiliar danger zone full of ponies and pony tech, or will the gaps in their knowledge throw them into (obligatory title drop) a tailspin?

A crossover with Thunderbirds Are Go (the 2015 series).