Lenny Aaron is an ex-cop who now runs a business tracking down Melbourne's cats that have gone AWOL. Having left the police after her last investigation went horribly wrong, Lenny is gradually piecing her life back together with a little help from Zen and a fistful of analgesics. The daughter of a media mogul hires Lenny's services to find a missing cat and uncover the identity of the author of a series of threatening letters. Before she knows it, Lenny - with all her eccentricities, phobias and addictions - is back in the murder business. Without nine lives she must race against time as the adventure gets deadlier and the stakes get higher in this fast-paced game of cat and mouse.