Felix has been working as Senior Pest Controller at Huddersfield train station for six years. But the platform of fame and the attentions of her adoring fans from across the world means she doesn't have much time for her important rodent-chasing duties. Besides, she's a celebrity now -- she can't be expected to dirty her paws for every common mouse. Ultimately, there's only so much fame one cat can handle, and before long a lively little apprentice arrives to help out -- enter, Bolt! But will the two of them get on? And will the diva of Huddersfield station make room for the new kitten on the block? Discover whether they become fluffy friends, or if one of them will find themselves on the wrong side of the tracks...