All the sea ice melts because of global warming. Following the principle of survival of the fittest, only one polar bear survives. It is given a chance to see the world beyond the ice and snow, and drifts to the warm Southern Ocean with the ice floe. When it starves to the point of death, a black and white sheep from a cargo ship rescues it. Many animals are living on the cargo ship where the social class is defined by the colours of their fur: white and black. How do the homeless polar bear and the sheep experiencing an identity crisis support each other in this floating city?