There’s Cat, a free stray cat, a leader of the cats’ gang – residents of prison, known as Purrrison. As a true leader of a gang with its strict hierarchy, Cat is cunning, strong and resilient – all the qualities that are vital to be able to survive in the harsh prison enviroment. Quite ironically, Cat, a prison cat, treasures his freedom mostly, and his pragmatic approach helps him to head the gang, providing for himself and the kittens, keeping a peace treaty and a balanced co-existence with other inhabitants of the prison quarters, including rats and the old lonely dog. This carefully maintained balance worked smoothly until a sudden intrusion of a crow named Irky, whose naivety, impulsiveness and impracticality immediately disrupt the prison’s established order.

Irky, a young and clueless crow, lands in the prison's courtyard, covered in fresh white paint from an unfortunate encounter with a newly painted birch tree. But it is not only the white paint that makes the crow a proper embodiment of a “white crow”. Raised by humans in a deli/café, Irky has no experience of survival, but has learned to read and even speak human language. After the café’s owner passed away Irky sets out on a journey as an independent bird, until her flight gets disrupted by a tree’s bulk. Accustomed to the pet/owner dynamics, she sees Cat as “her” cat, of which, luckily to her, he remains unaware . Paradoxically her abrupt arrival intervenes with a riotplot within the cat gang, when younger and stronger cats seek to undermine Cat’s status as the Cat in Charge.

Irky persuades Cat to run a “rescue” operation of a human inmate – for the sake of Shiny, a British domestic cat, another character in the heart of the story. Shiny has been brought to prison in a desperate quest to reunite with her recently arrested and confined owner. With her once pristine fur, delicate demeanor and absent –  surgically removed  –laws Shiny would be a justified target for constantly underfed inhabitants of the Purrrison, rats and cats alike. Yet Cat and Irky decide otherwise.

With their own lives and the existence of all animal inhabitants of the prison in mortal danger, the newly bonded friends concoct an intricate plan of making the owner and the domestic cat reunite and succeed – against numerous odds and disruptions – in an impossible mission: to release the human inmate from the prison.

Through vivid descriptions, hilarious dialogues, quite eccentric inclusions of poetic texts, and a mix of dark humor and poignant moments, Berkovich paints a complex portrait of life in confinement, where the boundaries between humans and animals blur, and survival depends on friendship and loyalty, but also on luck and wit, and – ultimately – on an enduring hope for freedom.