When Felix arrived at Yorkshire's Huddersfield Train Station as an eight-week-old kitten, no one knew just how important this little ball of fluff would become. Although she has a vital job to do as 'Senior Pest Controller', Felix is much more than just an employee of TransPennine Express. Felix changes lives in surprising ways. She is always ready to leap into action and save the day: from bringing a boy with autism out of his shell to providing comfort to a runaway child shivering on the platform one night. So when tragedy hits the team at Huddersfield, it is only Felix who can pull them back together. But a chance friendship with a commuter that she waits for her on the platform every morning finally gives Felix the recognition she deserves, catapulting her to international stardom . . .