This unusual comic book recounts a true story that happened on a small island just off the coast of New Zealand in 1894. The tragicomic hero of the tale is a cat named Tibbles, who belonged to the keeper of the islands lighthouse.

Tibbles discovers a rare species of previously undescribed flightless bird the Stephens Island wren, and simultaneously becomes the cause of its demise, thereby inadvertently contributing to global awareness of the danger of domesticating non-native animal species on other continents.